Merge branch 'remove-jodatime-droid-898'

30 files changed, 122 insertions, 105 deletions

diff --git a/android/app/src/androidTest/kotlin/net/mullvad/mullvadvpn/compose/screen/ConnectScreenTest.kt b/android/app/src/androidTest/kotlin/net/mullvad/mullvadvpn/compose/screen/ConnectScreenTest.kt
index 0cdc8b8fe7..f1a81d4d91 100644
--- a/android/app/src/androidTest/kotlin/net/mullvad/mullvadvpn/compose/screen/ConnectScreenTest.kt
+++ b/android/app/src/androidTest/kotlin/net/mullvad/mullvadvpn/compose/screen/ConnectScreenTest.kt
@@ -10,6 +10,9 @@ import io.mockk.every
 import io.mockk.mockk
 import io.mockk.unmockkAll
 import io.mockk.verify
+import java.time.Duration
+import java.time.Instant
+import java.time.ZonedDateTime
 import net.mullvad.mullvadvpn.compose.createEdgeToEdgeComposeExtension
 import net.mullvad.mullvadvpn.compose.setContentWithTheme
 import net.mullvad.mullvadvpn.compose.state.ConnectUiState
@@ -30,8 +33,6 @@ import net.mullvad.mullvadvpn.lib.model.TunnelEndpoint
 import net.mullvad.mullvadvpn.lib.model.TunnelState
 import net.mullvad.mullvadvpn.repository.InAppNotification
 import net.mullvad.mullvadvpn.ui.VersionInfo
-import org.joda.time.DateTime
-import org.joda.time.Duration
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -556,7 +557,7 @@ class ConnectScreenTest {
     fun testAccountExpiredNotification() {
         composeExtension.use {
             // Arrange
-            val expiryDate = DateTime(2020, 11, 11, 10, 10)
+            val expiryDate = ZonedDateTime.parse("2020-11-11T10:10Z")
             initScreen(
                 state =
                     ConnectUiState(
@@ -567,7 +568,9 @@ class ConnectScreenTest {
                         deviceName = "",
                         daysLeftUntilExpiry = null,
                         inAppNotification =
-                            InAppNotification.AccountExpiry(Duration(DateTime.now(), expiryDate)),
+                            InAppNotification.AccountExpiry(
+                                Duration.between(Instant.now(), expiryDate)
+                            ),
                         isPlayBuild = false,
                     )
             )
@@ -612,7 +615,7 @@ class ConnectScreenTest {
         composeExtension.use {
             // Arrange
             val mockedClickHandler: () -> Unit = mockk(relaxed = true)
-            val expiryDate = DateTime(2020, 11, 11, 10, 10)
+            val expiryDate = ZonedDateTime.parse("2020-11-11T10:10Z")
             initScreen(
                 onManageAccountClick = mockedClickHandler,
                 state =
@@ -624,7 +627,9 @@ class ConnectScreenTest {
                         deviceName = "",
                         daysLeftUntilExpiry = null,
                         inAppNotification =
-                            InAppNotification.AccountExpiry(Duration(DateTime.now(), expiryDate)),
+                            InAppNotification.AccountExpiry(
+                                Duration.between(Instant.now(), expiryDate)
+                            ),
                         isPlayBuild = false,
                     ),
             )
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/Scaffolding.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/Scaffolding.kt
index 3d591bafba..29fa7415bb 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/Scaffolding.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/Scaffolding.kt
@@ -78,7 +78,7 @@ fun ScaffoldWithTopBarAndDeviceName(
     isIconAndLogoVisible: Boolean = true,
     snackbarHostState: SnackbarHostState = remember { SnackbarHostState() },
     deviceName: String?,
-    timeLeft: Int?,
+    timeLeft: Long?,
     content: @Composable (PaddingValues) -> Unit,
 ) {
     Scaffold(
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/TopBar.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/TopBar.kt
index 91cb49ae53..e7a58d998b 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/TopBar.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/TopBar.kt
@@ -332,7 +332,7 @@ fun MullvadTopBarWithDeviceName(
     iconTintColor: Color,
     isIconAndLogoVisible: Boolean = true,
     deviceName: String?,
-    daysLeftUntilExpiry: Int?,
+    daysLeftUntilExpiry: Long?,
 ) {
     Column {
         MullvadTopBar(
@@ -383,8 +383,8 @@ fun MullvadTopBarWithDeviceName(
                             if (daysLeftUntilExpiry >= 0) {
                                 pluralStringResource(
                                     id = R.plurals.days,
-                                    daysLeftUntilExpiry,
-                                    daysLeftUntilExpiry,
+                                    daysLeftUntilExpiry.toInt(),
+                                    daysLeftUntilExpiry.toInt(),
                                 )
                             } else {
                                 stringResource(id = R.string.out_of_time)
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/notificationbanner/NotificationBanner.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/notificationbanner/NotificationBanner.kt
index f15a054b7d..4f527a94c5 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/notificationbanner/NotificationBanner.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/component/notificationbanner/NotificationBanner.kt
@@ -30,6 +30,7 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.constraintlayout.compose.ConstraintLayout
 import androidx.constraintlayout.compose.Dimension
+import java.time.Duration
 import net.mullvad.mullvadvpn.compose.component.MullvadTopBar
 import net.mullvad.mullvadvpn.compose.test.NOTIFICATION_BANNER
 import net.mullvad.mullvadvpn.compose.test.NOTIFICATION_BANNER_ACTION
@@ -43,7 +44,6 @@ import net.mullvad.mullvadvpn.lib.theme.color.warning
 import net.mullvad.mullvadvpn.repository.InAppNotification
 import net.mullvad.mullvadvpn.ui.VersionInfo
 import net.mullvad.mullvadvpn.ui.notification.StatusLevel
-import org.joda.time.Duration
 
 @Preview
 @Composable
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/dialog/RedeemVoucherDialog.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/dialog/RedeemVoucherDialog.kt
index a9859c318a..93b29e5185 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/dialog/RedeemVoucherDialog.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/dialog/RedeemVoucherDialog.kt
@@ -29,6 +29,7 @@ import com.ramcosta.composedestinations.annotation.Destination
 import com.ramcosta.composedestinations.annotation.RootGraph
 import com.ramcosta.composedestinations.result.ResultBackNavigator
 import com.ramcosta.composedestinations.spec.DestinationStyle
+import java.util.concurrent.TimeUnit
 import net.mullvad.mullvadvpn.BuildConfig
 import net.mullvad.mullvadvpn.R
 import net.mullvad.mullvadvpn.compose.button.PrimaryButton
@@ -46,7 +47,6 @@ import net.mullvad.mullvadvpn.lib.model.RedeemVoucherError
 import net.mullvad.mullvadvpn.lib.theme.AppTheme
 import net.mullvad.mullvadvpn.lib.theme.Dimens
 import net.mullvad.mullvadvpn.viewmodel.VoucherDialogViewModel
-import org.joda.time.DateTimeConstants
 import org.koin.androidx.compose.koinViewModel
 
 @Preview(device = Devices.TV_720p)
@@ -157,9 +157,10 @@ fun RedeemVoucherDialog(
                 modifier = Modifier.fillMaxWidth(),
                 horizontalAlignment = Alignment.CenterHorizontally,
             ) {
+                TimeUnit.DAYS.toSeconds(1)
                 if (state.voucherState is VoucherDialogState.Success) {
                     val days: Int =
-                        (state.voucherState.addedTime / DateTimeConstants.SECONDS_PER_DAY).toInt()
+                        (state.voucherState.addedTime / TimeUnit.DAYS.toSeconds(1)).toInt()
                     val message =
                         stringResource(
                             R.string.added_to_your_account,
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/extensions/ResourcesExtensions.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/extensions/ResourcesExtensions.kt
index 9611897e76..28459c9a5d 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/extensions/ResourcesExtensions.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/extensions/ResourcesExtensions.kt
@@ -1,16 +1,16 @@
 package net.mullvad.mullvadvpn.compose.extensions
 
 import android.content.res.Resources
+import java.time.Duration
 import net.mullvad.mullvadvpn.R
-import org.joda.time.Duration
 
 private const val DAYS_IN_STANDARD_YEAR = 365
 
 fun Resources.getExpiryQuantityString(accountExpiry: Duration): String {
-    val days = accountExpiry.standardDays.toInt()
-    val years = (accountExpiry.standardDays / DAYS_IN_STANDARD_YEAR).toInt()
+    val days = accountExpiry.toDays().toInt()
+    val years = (accountExpiry.toDays() / DAYS_IN_STANDARD_YEAR).toInt()
 
-    return if (accountExpiry.millis <= 0) {
+    return if (accountExpiry.toMillis() <= 0) {
         getString(R.string.out_of_time)
     } else if (years > 1) {
         getRemainingText(this, R.plurals.years_left, years)
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/preview/AccountUiStatePreviewParameterProvider.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/preview/AccountUiStatePreviewParameterProvider.kt
index c15e8b2a53..f40d0697ab 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/preview/AccountUiStatePreviewParameterProvider.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/preview/AccountUiStatePreviewParameterProvider.kt
@@ -1,6 +1,8 @@
 package net.mullvad.mullvadvpn.compose.preview
 
 import androidx.compose.ui.tooling.preview.PreviewParameterProvider
+import java.time.ZonedDateTime
+import java.time.format.DateTimeFormatter
 import net.mullvad.mullvadvpn.compose.state.PaymentState
 import net.mullvad.mullvadvpn.lib.model.AccountNumber
 import net.mullvad.mullvadvpn.lib.payment.model.PaymentProduct
@@ -8,7 +10,6 @@ import net.mullvad.mullvadvpn.lib.payment.model.PaymentStatus
 import net.mullvad.mullvadvpn.lib.payment.model.ProductId
 import net.mullvad.mullvadvpn.lib.payment.model.ProductPrice
 import net.mullvad.mullvadvpn.viewmodel.AccountUiState
-import org.joda.time.DateTime
 
 class AccountUiStatePreviewParameterProvider : PreviewParameterProvider<AccountUiState> {
     override val values =
@@ -16,7 +17,11 @@ class AccountUiStatePreviewParameterProvider : PreviewParameterProvider<AccountU
             AccountUiState(
                 deviceName = "Test Name",
                 accountNumber = AccountNumber("1234123412341234"),
-                accountExpiry = DateTime.parse("2050-12-01"),
+                accountExpiry =
+                    ZonedDateTime.parse(
+                        "2050-12-01T00:00:00.000Z",
+                        DateTimeFormatter.ISO_ZONED_DATE_TIME,
+                    ),
                 showSitePayment = true,
                 billingPaymentState =
                     PaymentState.PaymentAvailable(
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/preview/DevicePreviewData.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/preview/DevicePreviewData.kt
index b87974d18b..82bf05ba64 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/preview/DevicePreviewData.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/preview/DevicePreviewData.kt
@@ -1,9 +1,10 @@
 package net.mullvad.mullvadvpn.compose.preview
 
+import java.time.ZonedDateTime
+import java.time.format.DateTimeFormatter
 import net.mullvad.mullvadvpn.compose.state.DeviceItemUiState
 import net.mullvad.mullvadvpn.lib.model.Device
 import net.mullvad.mullvadvpn.lib.model.DeviceId
-import org.joda.time.DateTime
 
 internal object DevicePreviewData {
     fun generateDevices(count: Int) =
@@ -16,10 +17,11 @@ internal object DevicePreviewData {
         Device(
             id = DeviceId.fromString(id),
             name = name ?: "Device $index-${id.take(DEVICE_SUFFIX_LENGTH)}",
-            creationDate = DEVICE_CREATION_DATE.plusMonths(index),
+            creationDate = DEVICE_CREATION_DATE.plusMonths(index.toLong()),
         )
 }
 
 private const val DEVICE_SUFFIX_LENGTH = 4
 private const val UUID = "12345678-1234-5678-1234-567812345678"
-private val DEVICE_CREATION_DATE = DateTime.parse("2024-05-27")
+private val DEVICE_CREATION_DATE =
+    ZonedDateTime.parse("2024-05-27T00:00+00:00", DateTimeFormatter.ISO_ZONED_DATE_TIME)
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/screen/AccountScreen.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/screen/AccountScreen.kt
index ddfb535faf..bd3d8b8bc5 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/screen/AccountScreen.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/screen/AccountScreen.kt
@@ -38,6 +38,7 @@ import com.ramcosta.composedestinations.generated.destinations.VerificationPendi
 import com.ramcosta.composedestinations.navigation.DestinationsNavigator
 import com.ramcosta.composedestinations.result.NavResult
 import com.ramcosta.composedestinations.result.ResultRecipient
+import java.time.ZonedDateTime
 import kotlinx.coroutines.launch
 import net.mullvad.mullvadvpn.R
 import net.mullvad.mullvadvpn.compose.button.ExternalButton
@@ -57,13 +58,12 @@ import net.mullvad.mullvadvpn.compose.util.CollectSideEffectWithLifecycle
 import net.mullvad.mullvadvpn.compose.util.SecureScreenWhileInView
 import net.mullvad.mullvadvpn.compose.util.createCopyToClipboardHandle
 import net.mullvad.mullvadvpn.compose.util.showSnackbarImmediately
+import net.mullvad.mullvadvpn.lib.common.util.toExpiryDateString
 import net.mullvad.mullvadvpn.lib.payment.model.ProductId
 import net.mullvad.mullvadvpn.lib.theme.AppTheme
 import net.mullvad.mullvadvpn.lib.theme.Dimens
-import net.mullvad.mullvadvpn.util.toExpiryDateString
 import net.mullvad.mullvadvpn.viewmodel.AccountUiState
 import net.mullvad.mullvadvpn.viewmodel.AccountViewModel
-import org.joda.time.DateTime
 import org.koin.androidx.compose.koinViewModel
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -256,7 +256,7 @@ private fun AccountNumberRow(accountNumber: String, onCopyAccountNumber: (String
 }
 
 @Composable
-private fun PaidUntilRow(accountExpiry: DateTime?) {
+private fun PaidUntilRow(accountExpiry: ZonedDateTime?) {
     Column(modifier = Modifier.fillMaxWidth()) {
         Text(
             style = MaterialTheme.typography.labelMedium,
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/screen/DeviceListScreen.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/screen/DeviceListScreen.kt
index 34ac8d98b7..0a9504f46c 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/screen/DeviceListScreen.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/screen/DeviceListScreen.kt
@@ -56,6 +56,7 @@ import net.mullvad.mullvadvpn.compose.state.DeviceListUiState
 import net.mullvad.mullvadvpn.compose.transitions.DefaultTransition
 import net.mullvad.mullvadvpn.compose.util.CollectSideEffectWithLifecycle
 import net.mullvad.mullvadvpn.compose.util.showSnackbarImmediately
+import net.mullvad.mullvadvpn.lib.common.util.formatDate
 import net.mullvad.mullvadvpn.lib.model.AccountNumber
 import net.mullvad.mullvadvpn.lib.model.Device
 import net.mullvad.mullvadvpn.lib.model.DeviceId
@@ -64,7 +65,6 @@ import net.mullvad.mullvadvpn.lib.theme.Dimens
 import net.mullvad.mullvadvpn.lib.theme.color.selected
 import net.mullvad.mullvadvpn.lib.theme.typeface.listItemSubText
 import net.mullvad.mullvadvpn.lib.theme.typeface.listItemText
-import net.mullvad.mullvadvpn.util.formatDate
 import net.mullvad.mullvadvpn.viewmodel.DeviceListSideEffect
 import net.mullvad.mullvadvpn.viewmodel.DeviceListViewModel
 import org.koin.androidx.compose.koinViewModel
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/state/ConnectUiState.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/state/ConnectUiState.kt
index 98b5219785..4e17b6918b 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/state/ConnectUiState.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/compose/state/ConnectUiState.kt
@@ -11,7 +11,7 @@ data class ConnectUiState(
     val showLocation: Boolean,
     val inAppNotification: InAppNotification?,
     val deviceName: String?,
-    val daysLeftUntilExpiry: Int?,
+    val daysLeftUntilExpiry: Long?,
     val isPlayBuild: Boolean,
 ) {
 
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/provider/MullvadFileProvider.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/provider/MullvadFileProvider.kt
index 729fe5f2c2..b070f7c646 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/provider/MullvadFileProvider.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/provider/MullvadFileProvider.kt
@@ -5,9 +5,9 @@ import android.content.Intent
 import android.net.Uri
 import androidx.core.content.FileProvider
 import java.io.File
+import java.time.ZonedDateTime
+import java.time.format.DateTimeFormatter
 import net.mullvad.mullvadvpn.R
-import org.joda.time.DateTime
-import org.joda.time.format.ISODateTimeFormat
 
 // https://developer.android.com/reference/androidx/core/content/FileProvider
 // From link: It is possible to use FileProvider directly instead of extending it. However, this is
@@ -51,6 +51,6 @@ fun Context.createCacheFile(directory: ProviderCacheDirectory, fileName: String)
 }
 
 fun createShareLogFileName(): String {
-    val datetime = ISODateTimeFormat.basicOrdinalDateTimeNoMillis().print(DateTime.now())
+    val datetime = DateTimeFormatter.ofPattern("yyyyDDD'T'HHmmssZ").format(ZonedDateTime.now())
     return "mullvad_log-${datetime}.txt"
 }
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/repository/InAppNotificationController.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/repository/InAppNotificationController.kt
index 0fcee60bed..0e3e004f0b 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/repository/InAppNotificationController.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/repository/InAppNotificationController.kt
@@ -1,5 +1,6 @@
 package net.mullvad.mullvadvpn.repository
 
+import java.time.Duration
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.combine
@@ -12,7 +13,6 @@ import net.mullvad.mullvadvpn.usecase.NewChangelogNotificationUseCase
 import net.mullvad.mullvadvpn.usecase.NewDeviceNotificationUseCase
 import net.mullvad.mullvadvpn.usecase.TunnelStateNotificationUseCase
 import net.mullvad.mullvadvpn.usecase.VersionNotificationUseCase
-import org.joda.time.Duration
 
 enum class StatusLevel {
     Error,
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/usecase/OutOfTimeUseCase.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/usecase/OutOfTimeUseCase.kt
index 8fd97dc63d..081c632255 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/usecase/OutOfTimeUseCase.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/usecase/OutOfTimeUseCase.kt
@@ -14,11 +14,11 @@ import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onStart
 import kotlinx.coroutines.flow.stateIn
+import net.mullvad.mullvadvpn.lib.common.util.millisFromNow
 import net.mullvad.mullvadvpn.lib.model.ErrorStateCause
 import net.mullvad.mullvadvpn.lib.model.TunnelState
 import net.mullvad.mullvadvpn.lib.shared.AccountRepository
 import net.mullvad.mullvadvpn.lib.shared.ConnectionProxy
-import org.joda.time.DateTime
 
 class OutOfTimeUseCase(
     private val connectionProxy: ConnectionProxy,
@@ -60,7 +60,7 @@ class OutOfTimeUseCase(
             .flatMapLatest {
                 if (it != null) {
                     flow {
-                        val millisUntilExpiry = it.expiryDate.millis - DateTime.now().millis
+                        val millisUntilExpiry = it.expiryDate.millisFromNow()
                         if (millisUntilExpiry > 0) {
                             emit(false)
                             delay(millisUntilExpiry)
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/util/DateExtensions.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/util/DateExtensions.kt
deleted file mode 100644
index e11434257a..0000000000
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/util/DateExtensions.kt
+++ /dev/null
@@ -1,15 +0,0 @@
-package net.mullvad.mullvadvpn.util
-
-import java.text.DateFormat
-import kotlin.time.Duration.Companion.milliseconds
-import kotlin.time.DurationUnit
-import org.joda.time.DateTime
-import org.joda.time.format.ISODateTimeFormat
-
-fun DateTime.formatDate(): String = ISODateTimeFormat.date().print(this)
-
-fun DateTime.toExpiryDateString(): String =
-    DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT).format(this.toDate())
-
-fun DateTime.daysFromNow() =
-    (toInstant().millis - DateTime.now().toInstant().millis).milliseconds.toInt(DurationUnit.DAYS)
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/AccountViewModel.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/AccountViewModel.kt
index 8297375ee3..8dd4253553 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/AccountViewModel.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/AccountViewModel.kt
@@ -3,6 +3,7 @@ package net.mullvad.mullvadvpn.viewmodel
 import android.app.Activity
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
+import java.time.ZonedDateTime
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -27,7 +28,6 @@ import net.mullvad.mullvadvpn.lib.shared.DeviceRepository
 import net.mullvad.mullvadvpn.usecase.PaymentUseCase
 import net.mullvad.mullvadvpn.util.isSuccess
 import net.mullvad.mullvadvpn.util.toPaymentState
-import org.joda.time.DateTime
 
 class AccountViewModel(
     private val accountRepository: AccountRepository,
@@ -155,7 +155,7 @@ class AccountViewModel(
 data class AccountUiState(
     val deviceName: String?,
     val accountNumber: AccountNumber?,
-    val accountExpiry: DateTime?,
+    val accountExpiry: ZonedDateTime?,
     val showSitePayment: Boolean,
     val billingPaymentState: PaymentState? = null,
     val showLogoutLoading: Boolean = false,
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/ConnectViewModel.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/ConnectViewModel.kt
index 6e8b3f9009..d505c44179 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/ConnectViewModel.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/ConnectViewModel.kt
@@ -17,6 +17,7 @@ import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
 import net.mullvad.mullvadvpn.R
 import net.mullvad.mullvadvpn.compose.state.ConnectUiState
+import net.mullvad.mullvadvpn.lib.common.util.daysFromNow
 import net.mullvad.mullvadvpn.lib.model.ActionAfterDisconnect
 import net.mullvad.mullvadvpn.lib.model.ConnectError
 import net.mullvad.mullvadvpn.lib.model.DeviceState
@@ -34,7 +35,6 @@ import net.mullvad.mullvadvpn.usecase.OutOfTimeUseCase
 import net.mullvad.mullvadvpn.usecase.PaymentUseCase
 import net.mullvad.mullvadvpn.usecase.SelectedLocationTitleUseCase
 import net.mullvad.mullvadvpn.util.combine
-import net.mullvad.mullvadvpn.util.daysFromNow
 import net.mullvad.mullvadvpn.util.isSuccess
 import net.mullvad.mullvadvpn.util.withPrev
 
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/LoginViewModel.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/LoginViewModel.kt
index 25a8a47da3..088b5f3ae2 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/LoginViewModel.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/LoginViewModel.kt
@@ -24,6 +24,7 @@ import net.mullvad.mullvadvpn.compose.state.LoginState.Idle
 import net.mullvad.mullvadvpn.compose.state.LoginState.Loading
 import net.mullvad.mullvadvpn.compose.state.LoginState.Success
 import net.mullvad.mullvadvpn.compose.state.LoginUiState
+import net.mullvad.mullvadvpn.lib.common.util.isBeforeNowInstant
 import net.mullvad.mullvadvpn.lib.model.AccountNumber
 import net.mullvad.mullvadvpn.lib.model.LoginAccountError
 import net.mullvad.mullvadvpn.lib.shared.AccountRepository
@@ -137,7 +138,9 @@ class LoginViewModel(
         viewModelScope.launch(dispatcher) {
             // Find if user is out of time
             val isOutOfTimeDeferred = async {
-                accountRepository.accountData.mapNotNull { it?.expiryDate?.isBeforeNow }.first()
+                accountRepository.accountData
+                    .mapNotNull { it?.expiryDate?.isBeforeNowInstant() }
+                    .first()
             }
 
             // Always show successful login for some time.
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/SplashViewModel.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/SplashViewModel.kt
index 0ed85c94cd..fe0acd83c1 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/SplashViewModel.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/SplashViewModel.kt
@@ -13,6 +13,7 @@ import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.selects.onTimeout
 import kotlinx.coroutines.selects.select
 import net.mullvad.mullvadvpn.constant.ACCOUNT_EXPIRY_TIMEOUT_MS
+import net.mullvad.mullvadvpn.lib.common.util.isBeforeNowInstant
 import net.mullvad.mullvadvpn.lib.model.DeviceState
 import net.mullvad.mullvadvpn.lib.shared.AccountRepository
 import net.mullvad.mullvadvpn.lib.shared.DeviceRepository
@@ -72,7 +73,7 @@ class SplashViewModel(
             onTimeout(ACCOUNT_EXPIRY_TIMEOUT_MS) { null }
         }
 
-        return if (accountData != null && accountData.expiryDate.isBeforeNow) {
+        return if (accountData != null && accountData.expiryDate.isBeforeNowInstant()) {
             SplashUiSideEffect.NavigateToOutOfTime
         } else {
             SplashUiSideEffect.NavigateToConnect
diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/WelcomeViewModel.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/WelcomeViewModel.kt
index 67e0f7a54d..0e91390262 100644
--- a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/WelcomeViewModel.kt
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/viewmodel/WelcomeViewModel.kt
@@ -15,6 +15,7 @@ import kotlinx.coroutines.flow.receiveAsFlow
 import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
 import net.mullvad.mullvadvpn.compose.state.WelcomeUiState
+import net.mullvad.mullvadvpn.lib.common.util.isAfterNowInstant
 import net.mullvad.mullvadvpn.lib.model.WebsiteAuthToken
 import net.mullvad.mullvadvpn.lib.shared.AccountRepository
 import net.mullvad.mullvadvpn.lib.shared.ConnectionProxy
@@ -66,7 +67,7 @@ class WelcomeViewModel(
     private fun hasAddedTimeEffect() =
         accountRepository.accountData
             .filterNotNull()
-            .filter { it.expiryDate.minusHours(MIN_HOURS_PAST_ACCOUNT_EXPIRY).isAfterNow }
+            .filter { it.expiryDate.minusHours(MIN_HOURS_PAST_ACCOUNT_EXPIRY).isAfterNowInstant() }
             .onEach { paymentUseCase.resetPurchaseResult() }
             .map { UiSideEffect.OpenConnectScreen }
 
@@ -125,6 +126,6 @@ class WelcomeViewModel(
     }
 
     companion object {
-        private const val MIN_HOURS_PAST_ACCOUNT_EXPIRY = 20
+        private const val MIN_HOURS_PAST_ACCOUNT_EXPIRY: Long = 20
     }
 }
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/AccountExpiryNotificationProviderTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/AccountExpiryNotificationProviderTest.kt
index d830f407ab..9a3672515d 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/AccountExpiryNotificationProviderTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/AccountExpiryNotificationProviderTest.kt
@@ -5,6 +5,8 @@ import io.mockk.MockKAnnotations
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.unmockkAll
+import java.time.Duration
+import java.time.ZonedDateTime
 import kotlin.test.assertEquals
 import kotlin.test.assertTrue
 import kotlin.time.Duration.Companion.minutes
@@ -25,8 +27,6 @@ import net.mullvad.mullvadvpn.lib.shared.AccountRepository
 import net.mullvad.mullvadvpn.lib.shared.DeviceRepository
 import net.mullvad.mullvadvpn.service.notifications.accountexpiry.ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD
 import net.mullvad.mullvadvpn.service.notifications.accountexpiry.AccountExpiryNotificationProvider
-import org.joda.time.DateTime
-import org.joda.time.Duration
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -80,7 +80,9 @@ class AccountExpiryNotificationProviderTest {
     @Test
     fun `should emit notification if expiry time is shorter than expiry warning threshold`() =
         runTest {
-            setExpiry(DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
+            setExpiry(
+                ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1)
+            )
             provider.notifications.test {
                 assertTrue(awaitItem() is Notify)
                 expectNoEvents()
@@ -90,7 +92,7 @@ class AccountExpiryNotificationProviderTest {
     @Test
     fun `should emit cancel notification if user account is new`() = runTest {
         isNewDevice.value = true
-        setExpiry(DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
+        setExpiry(ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
         provider.notifications.test {
             assertTrue(awaitItem() is Cancel)
             expectNoEvents()
@@ -100,7 +102,7 @@ class AccountExpiryNotificationProviderTest {
     @Test
     fun `should emit cancel notification if user account is logged out`() = runTest {
         setIsLoggedIn(false)
-        setExpiry(DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
+        setExpiry(ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
         provider.notifications.test {
             assertTrue(awaitItem() is Cancel)
             expectNoEvents()
@@ -117,7 +119,7 @@ class AccountExpiryNotificationProviderTest {
 
     @Test
     fun `should emit zero duration notification when remaining time runs out`() = runTest {
-        setExpiry(DateTime.now().plus(Duration.standardSeconds(60)))
+        setExpiry(ZonedDateTime.now().plus(Duration.ofSeconds(60)))
         provider.notifications.test {
             assertTrue(awaitItem() is Notify)
             expectNoEvents()
@@ -135,7 +137,10 @@ class AccountExpiryNotificationProviderTest {
     @Test
     fun `should emit notification when update interval is passed`() = runTest {
         setExpiry(
-            DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1).plusHours(1)
+            ZonedDateTime.now()
+                .plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD)
+                .minusDays(1)
+                .plusHours(1)
         )
         provider.notifications.test {
             assertTrue(awaitItem() is Notify)
@@ -152,12 +157,14 @@ class AccountExpiryNotificationProviderTest {
 
     @Test
     fun `should cancel existing notification if more time is added to account`() = runTest {
-        setExpiry(DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
+        setExpiry(ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
         provider.notifications.test {
             assertTrue(awaitItem() is Notify)
             expectNoEvents()
 
-            setExpiry(DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).plusDays(1))
+            setExpiry(
+                ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).plusDays(1)
+            )
             assertTrue(awaitItem() is Cancel)
             expectNoEvents()
         }
@@ -165,12 +172,14 @@ class AccountExpiryNotificationProviderTest {
 
     @Test
     fun `should not cancel existing notification if too little time is added`() = runTest {
-        setExpiry(DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
+        setExpiry(ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusDays(1))
         provider.notifications.test {
             assertTrue(awaitItem() is Notify)
             expectNoEvents()
 
-            setExpiry(DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusHours(1))
+            setExpiry(
+                ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).minusHours(1)
+            )
             assertTrue(awaitItem() is Notify)
             expectNoEvents()
         }
@@ -184,7 +193,7 @@ class AccountExpiryNotificationProviderTest {
             is Notify -> awaitItem.value
         }
 
-    private fun setExpiry(expiryDateTime: DateTime): DateTime {
+    private fun setExpiry(expiryDateTime: ZonedDateTime): ZonedDateTime {
         val expiry = AccountData(mockk(relaxed = true), expiryDateTime)
         accountData.value = expiry
         return expiryDateTime
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/InAppNotificationControllerTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/InAppNotificationControllerTest.kt
index c8b27f2e6f..9db14ad914 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/InAppNotificationControllerTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/InAppNotificationControllerTest.kt
@@ -5,6 +5,7 @@ import io.mockk.MockKAnnotations
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.unmockkAll
+import java.time.Duration
 import kotlin.test.assertEquals
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -21,7 +22,6 @@ import net.mullvad.mullvadvpn.usecase.NewChangelogNotificationUseCase
 import net.mullvad.mullvadvpn.usecase.NewDeviceNotificationUseCase
 import net.mullvad.mullvadvpn.usecase.TunnelStateNotificationUseCase
 import net.mullvad.mullvadvpn.usecase.VersionNotificationUseCase
-import org.joda.time.Duration
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/AccountExpiryInAppNotificationUseCaseTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/AccountExpiryInAppNotificationUseCaseTest.kt
index 316d12addd..68b29790ac 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/AccountExpiryInAppNotificationUseCaseTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/AccountExpiryInAppNotificationUseCaseTest.kt
@@ -7,6 +7,8 @@ import io.mockk.MockKAnnotations
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.unmockkAll
+import java.time.Duration
+import java.time.ZonedDateTime
 import kotlin.test.assertEquals
 import kotlin.test.assertTrue
 import kotlin.time.Duration.Companion.seconds
@@ -19,8 +21,6 @@ import net.mullvad.mullvadvpn.lib.shared.AccountRepository
 import net.mullvad.mullvadvpn.repository.InAppNotification
 import net.mullvad.mullvadvpn.service.notifications.accountexpiry.ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD
 import net.mullvad.mullvadvpn.service.notifications.accountexpiry.ACCOUNT_EXPIRY_IN_APP_NOTIFICATION_UPDATE_INTERVAL
-import org.joda.time.DateTime
-import org.joda.time.Duration
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -33,7 +33,7 @@ class AccountExpiryInAppNotificationUseCaseTest {
     private lateinit var accountExpiryInAppNotificationUseCase:
         AccountExpiryInAppNotificationUseCase
 
-    private lateinit var notificationThreshold: DateTime
+    private lateinit var notificationThreshold: ZonedDateTime
 
     @BeforeEach
     fun setup() {
@@ -45,7 +45,7 @@ class AccountExpiryInAppNotificationUseCaseTest {
         accountExpiryInAppNotificationUseCase =
             AccountExpiryInAppNotificationUseCase(accountRepository)
 
-        notificationThreshold = DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD)
+        notificationThreshold = ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD)
     }
 
     @AfterEach
@@ -102,7 +102,7 @@ class AccountExpiryInAppNotificationUseCaseTest {
 
             // Set expiry to to be in the final update interval.
             val inLastUpdate =
-                DateTime.now()
+                ZonedDateTime.now()
                     .plus(ACCOUNT_EXPIRY_IN_APP_NOTIFICATION_UPDATE_INTERVAL)
                     .minusSeconds(1)
             val expiry = setExpiry(inLastUpdate)
@@ -113,34 +113,37 @@ class AccountExpiryInAppNotificationUseCaseTest {
             expectNoEvents()
 
             // Advance past the delay before the while loop:
-            advanceTimeBy(ACCOUNT_EXPIRY_IN_APP_NOTIFICATION_UPDATE_INTERVAL.millis)
+            advanceTimeBy(ACCOUNT_EXPIRY_IN_APP_NOTIFICATION_UPDATE_INTERVAL.toMillis())
             // Advance past the delay after the while loop:
-            advanceTimeBy(ACCOUNT_EXPIRY_IN_APP_NOTIFICATION_UPDATE_INTERVAL.millis)
+            advanceTimeBy(ACCOUNT_EXPIRY_IN_APP_NOTIFICATION_UPDATE_INTERVAL.toMillis())
             assertEquals(Duration.ZERO, getExpiryNotificationDuration(expectMostRecentItem()))
             expectNoEvents()
 
             // Make sure we reset the list of notifications emitted when new time is added
-            setExpiry(DateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).plusDays(1))
+            setExpiry(
+                ZonedDateTime.now().plus(ACCOUNT_EXPIRY_CLOSE_TO_EXPIRY_THRESHOLD).plusDays(1)
+            )
             assertEquals(emptyList(), expectMostRecentItem())
         }
     }
 
-    private fun setExpiry(expiryDateTime: DateTime): DateTime {
+    private fun setExpiry(expiryDateTime: ZonedDateTime): ZonedDateTime {
         val expiry = AccountData(mockk(relaxed = true), expiryDateTime)
         accountExpiry.value = expiry
         return expiryDateTime
     }
 
     // Assert that we got a single AccountExpiry notification and that the expiry duration is within
-    // the expected range (checking exact duration value is not possible since we use DateTime.now)
+    // the expected range (checking exact duration value is not possible since we use
+    // ZonedDateTime.now)
     private fun assertExpiryNotificationDuration(
-        expiry: DateTime,
+        expiry: ZonedDateTime,
         notifications: List<InAppNotification>,
     ) {
         val notificationDuration = getExpiryNotificationDuration(notifications)
-        val expiresFromNow = Duration(DateTime.now(), expiry)
+        val expiresFromNow = Duration.between(ZonedDateTime.now(), expiry)
         assertTrue(expiresFromNow <= notificationDuration)
-        assertTrue(expiresFromNow.plus(Duration.standardSeconds(5)) > notificationDuration)
+        assertTrue(expiresFromNow.plus(Duration.ofSeconds(5)) > notificationDuration)
     }
 
     private fun getExpiryNotificationDuration(notifications: List<InAppNotification>): Duration {
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/NewDeviceNotificationUseCaseTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/NewDeviceNotificationUseCaseTest.kt
index 32cc48f2c5..2c97ea36a1 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/NewDeviceNotificationUseCaseTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/NewDeviceNotificationUseCaseTest.kt
@@ -5,6 +5,7 @@ import io.mockk.MockKAnnotations
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
 import io.mockk.unmockkAll
+import java.time.ZonedDateTime
 import kotlin.test.assertEquals
 import kotlin.test.assertTrue
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -18,7 +19,6 @@ import net.mullvad.mullvadvpn.lib.model.DeviceState
 import net.mullvad.mullvadvpn.lib.shared.DeviceRepository
 import net.mullvad.mullvadvpn.repository.InAppNotification
 import net.mullvad.mullvadvpn.repository.NewDeviceRepository
-import org.joda.time.DateTime
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -35,7 +35,7 @@ class NewDeviceNotificationUseCaseTest {
                 Device(
                     id = DeviceId.fromString(UUID),
                     name = deviceName,
-                    creationDate = DateTime.now(),
+                    creationDate = ZonedDateTime.now(),
                 ),
             )
         )
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/OutOfTimeUseCaseTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/OutOfTimeUseCaseTest.kt
index f8ecefbffd..4fd3ba08d1 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/OutOfTimeUseCaseTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/usecase/OutOfTimeUseCaseTest.kt
@@ -4,6 +4,7 @@ import app.cash.turbine.test
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.unmockkAll
+import java.time.ZonedDateTime
 import kotlin.test.assertEquals
 import kotlin.time.Duration.Companion.days
 import kotlin.time.Duration.Companion.minutes
@@ -26,7 +27,6 @@ import net.mullvad.mullvadvpn.lib.model.ErrorStateCause
 import net.mullvad.mullvadvpn.lib.model.TunnelState
 import net.mullvad.mullvadvpn.lib.shared.AccountRepository
 import net.mullvad.mullvadvpn.lib.shared.ConnectionProxy
-import org.joda.time.DateTime
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -91,7 +91,7 @@ class OutOfTimeUseCaseTest {
         scope.runTest {
             // Arrange
             val expiredAccountExpiry =
-                AccountData(mockk(relaxed = true), DateTime.now().plusDays(1))
+                AccountData(mockk(relaxed = true), ZonedDateTime.now().plusDays(1))
             val tunnelStateChanges =
                 listOf(
                     TunnelState.Disconnected(),
@@ -120,7 +120,7 @@ class OutOfTimeUseCaseTest {
         scope.runTest {
             // Arrange
             val expiredAccountExpiry =
-                AccountData(mockk(relaxed = true), DateTime.now().minusDays(1))
+                AccountData(mockk(relaxed = true), ZonedDateTime.now().minusDays(1))
             // Act, Assert
             outOfTimeUseCase.isOutOfTime.test {
                 assertEquals(null, awaitItem())
@@ -134,7 +134,7 @@ class OutOfTimeUseCaseTest {
         scope.runTest {
             // Arrange
             val notExpiredAccountExpiry =
-                AccountData(mockk(relaxed = true), DateTime.now().plusDays(1))
+                AccountData(mockk(relaxed = true), ZonedDateTime.now().plusDays(1))
 
             // Act, Assert
             outOfTimeUseCase.isOutOfTime.test {
@@ -149,7 +149,7 @@ class OutOfTimeUseCaseTest {
         scope.runTest {
             // Arrange
             val expiredAccountExpiry =
-                AccountData(mockk(relaxed = true), DateTime.now().plusSeconds(100))
+                AccountData(mockk(relaxed = true), ZonedDateTime.now().plusSeconds(100))
             // Act, Assert
             outOfTimeUseCase.isOutOfTime.test {
                 // Initial event
@@ -173,7 +173,7 @@ class OutOfTimeUseCaseTest {
         scope.runTest {
             // Arrange
             val initialAccountExpiry =
-                AccountData(mockk(relaxed = true), DateTime.now().plusSeconds(100))
+                AccountData(mockk(relaxed = true), ZonedDateTime.now().plusSeconds(100))
             val updatedExpiry =
                 AccountData(mockk(relaxed = true), initialAccountExpiry.expiryDate.plusDays(30))
 
@@ -203,7 +203,7 @@ class OutOfTimeUseCaseTest {
         scope.runTest {
             // Arrange
             val initialAccountExpiry =
-                AccountData(mockk(relaxed = true), DateTime.now().plusSeconds(100))
+                AccountData(mockk(relaxed = true), ZonedDateTime.now().plusSeconds(100))
             val updatedExpiry =
                 AccountData(mockk(relaxed = true), initialAccountExpiry.expiryDate.plusDays(30))
             // Act, Assert
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/AccountViewModelTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/AccountViewModelTest.kt
index 0a9d2f36f9..74a6bbd414 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/AccountViewModelTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/AccountViewModelTest.kt
@@ -9,6 +9,7 @@ import io.mockk.every
 import io.mockk.mockk
 import io.mockk.mockkStatic
 import io.mockk.unmockkAll
+import java.time.ZonedDateTime
 import kotlin.test.assertEquals
 import kotlin.test.assertIs
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -28,7 +29,6 @@ import net.mullvad.mullvadvpn.lib.payment.model.PurchaseResult
 import net.mullvad.mullvadvpn.lib.shared.AccountRepository
 import net.mullvad.mullvadvpn.lib.shared.DeviceRepository
 import net.mullvad.mullvadvpn.usecase.PaymentUseCase
-import org.joda.time.DateTime
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -42,7 +42,11 @@ class AccountViewModelTest {
     private val mockPaymentUseCase: PaymentUseCase = mockk(relaxed = true)
 
     private val dummyDevice =
-        Device(id = DeviceId.fromString(UUID), name = "fake_name", creationDate = DateTime.now())
+        Device(
+            id = DeviceId.fromString(UUID),
+            name = "fake_name",
+            creationDate = ZonedDateTime.now(),
+        )
     private val dummyAccountNumber: AccountNumber = AccountNumber(DUMMY_DEVICE_NAME)
 
     private val deviceState: MutableStateFlow<DeviceState?> =
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/LoginViewModelTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/LoginViewModelTest.kt
index 1a80597066..a2be07e0a6 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/LoginViewModelTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/LoginViewModelTest.kt
@@ -11,6 +11,7 @@ import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
 import io.mockk.mockk
+import java.time.ZonedDateTime
 import kotlin.test.assertIs
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -29,7 +30,6 @@ import net.mullvad.mullvadvpn.lib.model.AccountNumber
 import net.mullvad.mullvadvpn.lib.model.LoginAccountError
 import net.mullvad.mullvadvpn.lib.shared.AccountRepository
 import net.mullvad.mullvadvpn.usecase.InternetAvailableUseCase
-import org.joda.time.DateTime
 import org.junit.jupiter.api.Assertions.assertEquals
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -133,7 +133,9 @@ class LoginViewModelTest {
             val sideEffects = loginViewModel.uiSideEffect.testIn(backgroundScope)
             coEvery { mockedAccountRepository.login(any()) } returns Unit.right()
             coEvery { mockedAccountRepository.accountData } returns
-                MutableStateFlow(AccountData(mockk(relaxed = true), DateTime.now().plusDays(3)))
+                MutableStateFlow(
+                    AccountData(mockk(relaxed = true), ZonedDateTime.now().plusDays(3))
+                )
 
             // Act, Assert
             uiStates.skipDefaultItem()
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/OutOfTimeViewModelTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/OutOfTimeViewModelTest.kt
index 6c1ff9e1a2..bfaed10629 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/OutOfTimeViewModelTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/OutOfTimeViewModelTest.kt
@@ -31,8 +31,6 @@ import net.mullvad.mullvadvpn.ui.serviceconnection.ServiceConnectionManager
 import net.mullvad.mullvadvpn.ui.serviceconnection.ServiceConnectionState
 import net.mullvad.mullvadvpn.usecase.OutOfTimeUseCase
 import net.mullvad.mullvadvpn.usecase.PaymentUseCase
-import org.joda.time.DateTime
-import org.joda.time.ReadableInstant
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -132,10 +130,6 @@ class OutOfTimeViewModelTest {
     @Test
     fun `when OutOfTimeUseCase returns false uiSideEffect should emit OpenConnectScreen`() =
         runTest {
-            // Arrange
-            val mockExpiryDate: DateTime = mockk()
-            every { mockExpiryDate.isAfter(any<ReadableInstant>()) } returns true
-
             // Act, Assert
             viewModel.uiSideEffect.test {
                 outOfTimeFlow.value = false
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/VoucherDialogViewModelTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/VoucherDialogViewModelTest.kt
index 3bd96de3cb..e5ae99d872 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/VoucherDialogViewModelTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/VoucherDialogViewModelTest.kt
@@ -8,6 +8,7 @@ import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.unmockkAll
+import java.time.ZonedDateTime
 import kotlin.test.assertEquals
 import kotlin.test.assertIs
 import kotlin.test.assertTrue
@@ -18,7 +19,6 @@ import net.mullvad.mullvadvpn.lib.model.RedeemVoucherError
 import net.mullvad.mullvadvpn.lib.model.RedeemVoucherSuccess
 import net.mullvad.mullvadvpn.lib.model.VoucherCode
 import net.mullvad.mullvadvpn.lib.shared.VoucherRepository
-import org.joda.time.DateTime
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -50,7 +50,7 @@ class VoucherDialogViewModelTest {
 
         // Arrange
         val timeAdded = 0L
-        val newExpiry = DateTime()
+        val newExpiry = ZonedDateTime.now()
         coEvery { mockVoucherRepository.submitVoucher(parsedVoucher) } returns
             RedeemVoucherSuccess(timeAdded, newExpiry).right()
 
@@ -89,7 +89,7 @@ class VoucherDialogViewModelTest {
         every { mockVoucherSubmission.timeAdded } returns 0
         coEvery {
             mockVoucherRepository.submitVoucher(VoucherCode.fromString(voucher).getOrNull()!!)
-        } returns RedeemVoucherSuccess(0, DateTime()).right()
+        } returns RedeemVoucherSuccess(0, ZonedDateTime.now()).right()
 
         // Act, Assert
         viewModel.uiState.test {
diff --git a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/WelcomeViewModelTest.kt b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/WelcomeViewModelTest.kt
index 3fe3804b8b..b2b59ba69e 100644
--- a/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/WelcomeViewModelTest.kt
+++ b/android/app/src/test/kotlin/net/mullvad/mullvadvpn/viewmodel/WelcomeViewModelTest.kt
@@ -9,6 +9,7 @@ import io.mockk.every
 import io.mockk.mockk
 import io.mockk.mockkStatic
 import io.mockk.unmockkAll
+import java.time.ZonedDateTime
 import kotlin.test.assertEquals
 import kotlin.test.assertIs
 import kotlinx.coroutines.cancel
@@ -32,7 +33,6 @@ import net.mullvad.mullvadvpn.lib.shared.DeviceRepository
 import net.mullvad.mullvadvpn.ui.serviceconnection.ServiceConnectionManager
 import net.mullvad.mullvadvpn.ui.serviceconnection.ServiceConnectionState
 import net.mullvad.mullvadvpn.usecase.PaymentUseCase
-import org.joda.time.DateTime
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -146,7 +146,9 @@ class WelcomeViewModelTest {
     @Test
     fun `when user has added time then uiSideEffect should emit OpenConnectScreen`() = runTest {
         // Arrange
-        accountExpiryStateFlow.emit(AccountData(mockk(relaxed = true), DateTime().plusDays(1)))
+        accountExpiryStateFlow.emit(
+            AccountData(mockk(relaxed = true), ZonedDateTime.now().plusDays(1))
+        )
 
         // Act, Assert
         viewModel.uiSideEffect.test {