diff --git a/app/src/main/java/org/schabi/newpipe/App.java b/app/src/main/java/org/schabi/newpipe/App.java
index 7e3466f67..062a033e9 100644
--- a/app/src/main/java/org/schabi/newpipe/App.java
+++ b/app/src/main/java/org/schabi/newpipe/App.java
@@ -6,16 +6,26 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Build;
 import android.util.Log;
-
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.multidex.MultiDexApplication;
 import androidx.preference.PreferenceManager;
-
 import com.nostra13.universalimageloader.cache.memory.impl.LRULimitedMemoryCache;
 import com.nostra13.universalimageloader.core.ImageLoader;
 import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
-
+import io.reactivex.rxjava3.disposables.Disposable;
+import io.reactivex.rxjava3.exceptions.CompositeException;
+import io.reactivex.rxjava3.exceptions.MissingBackpressureException;
+import io.reactivex.rxjava3.exceptions.OnErrorNotImplementedException;
+import io.reactivex.rxjava3.exceptions.UndeliverableException;
+import io.reactivex.rxjava3.functions.Consumer;
+import io.reactivex.rxjava3.plugins.RxJavaPlugins;
+import java.io.IOException;
+import java.io.InterruptedIOException;
+import java.net.SocketException;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
 import org.acra.ACRA;
 import org.acra.config.ACRAConfigurationException;
 import org.acra.config.CoreConfiguration;
@@ -31,21 +41,6 @@ import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.ServiceHelper;
 import org.schabi.newpipe.util.StateSaver;
 
-import java.io.IOException;
-import java.io.InterruptedIOException;
-import java.net.SocketException;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-
-import io.reactivex.rxjava3.disposables.Disposable;
-import io.reactivex.rxjava3.exceptions.CompositeException;
-import io.reactivex.rxjava3.exceptions.MissingBackpressureException;
-import io.reactivex.rxjava3.exceptions.OnErrorNotImplementedException;
-import io.reactivex.rxjava3.exceptions.UndeliverableException;
-import io.reactivex.rxjava3.functions.Consumer;
-import io.reactivex.rxjava3.plugins.RxJavaPlugins;
-
 /*
  * Copyright (C) Hans-Christoph Steiner 2016 <hans@eds.org>
  * App.java is part of NewPipe.
@@ -93,9 +88,9 @@ public class App extends MultiDexApplication {
         SettingsActivity.initSettings(this);
 
         NewPipe.init(getDownloader(),
-                Localization.getPreferredLocalization(this),
-                Localization.getPreferredContentCountry(this));
-        Localization.init(getApplicationContext());
+            Localization.getPreferredLocalization(this),
+            Localization.getPreferredContentCountry(this));
+        Localization.initPrettyTime(Localization.resolvePrettyTime(getApplicationContext()));
 
         StateSaver.init(this);
         initNotificationChannels();
diff --git a/app/src/main/java/org/schabi/newpipe/MainActivity.java b/app/src/main/java/org/schabi/newpipe/MainActivity.java
index 0c784e9d5..1d1f87f6f 100644
--- a/app/src/main/java/org/schabi/newpipe/MainActivity.java
+++ b/app/src/main/java/org/schabi/newpipe/MainActivity.java
@@ -20,6 +20,8 @@
 
 package org.schabi.newpipe;
 
+import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
+
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -41,7 +43,6 @@ import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.FrameLayout;
 import android.widget.Spinner;
-
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.ActionBarDrawerToggle;
@@ -52,9 +53,10 @@ import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
 import androidx.preference.PreferenceManager;
-
 import com.google.android.material.bottomsheet.BottomSheetBehavior;
-
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
 import org.schabi.newpipe.databinding.ActivityMainBinding;
 import org.schabi.newpipe.databinding.DrawerHeaderBinding;
 import org.schabi.newpipe.databinding.DrawerLayoutBinding;
@@ -87,12 +89,6 @@ import org.schabi.newpipe.util.TLSSocketFactoryCompat;
 import org.schabi.newpipe.util.ThemeHelper;
 import org.schabi.newpipe.views.FocusOverlayView;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Objects;
-
-import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
-
 public class MainActivity extends AppCompatActivity {
     private static final String TAG = "MainActivity";
     public static final boolean DEBUG = !BuildConfig.BUILD_TYPE.equals("release");
@@ -468,7 +464,7 @@ public class MainActivity extends AppCompatActivity {
     protected void onResume() {
         assureCorrectAppLanguage(this);
         // Change the date format to match the selected language on resume
-        Localization.init(getApplicationContext());
+        Localization.initPrettyTime(Localization.resolvePrettyTime(getApplicationContext()));
         super.onResume();
 
         // Close drawer on return, and don't show animation,
diff --git a/app/src/main/java/org/schabi/newpipe/util/Localization.java b/app/src/main/java/org/schabi/newpipe/util/Localization.java
index 978f558c4..3fdab9a12 100644
--- a/app/src/main/java/org/schabi/newpipe/util/Localization.java
+++ b/app/src/main/java/org/schabi/newpipe/util/Localization.java
@@ -9,19 +9,10 @@ import android.icu.text.CompactDecimalFormat;
 import android.os.Build;
 import android.text.TextUtils;
 import android.util.DisplayMetrics;
-
 import androidx.annotation.NonNull;
 import androidx.annotation.PluralsRes;
 import androidx.annotation.StringRes;
 import androidx.preference.PreferenceManager;
-
-import org.ocpsoft.prettytime.PrettyTime;
-import org.ocpsoft.prettytime.units.Decade;
-import org.schabi.newpipe.R;
-import org.schabi.newpipe.extractor.ListExtractor;
-import org.schabi.newpipe.extractor.localization.ContentCountry;
-import org.schabi.newpipe.ktx.OffsetDateTimeKt;
-
 import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.text.NumberFormat;
@@ -33,6 +24,12 @@ import java.util.Arrays;
 import java.util.Calendar;
 import java.util.List;
 import java.util.Locale;
+import org.ocpsoft.prettytime.PrettyTime;
+import org.ocpsoft.prettytime.units.Decade;
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.ListExtractor;
+import org.schabi.newpipe.extractor.localization.ContentCountry;
+import org.schabi.newpipe.ktx.OffsetDateTimeKt;
 
 
 /*
@@ -62,10 +59,6 @@ public final class Localization {
 
     private Localization() { }
 
-    public static void init(final Context context) {
-        initPrettyTime(context);
-    }
-
     @NonNull
     public static String concatenateStrings(final String... strings) {
         return concatenateStrings(Arrays.asList(strings));
@@ -307,12 +300,16 @@ public final class Localization {
     // Pretty Time
     //////////////////////////////////////////////////////////////////////////*/
 
-    private static void initPrettyTime(final Context context) {
-        prettyTime = new PrettyTime(getAppLocale(context));
+    public static void initPrettyTime(final PrettyTime time) {
+        prettyTime = time;
         // Do not use decades as YouTube doesn't either.
         prettyTime.removeUnit(Decade.class);
     }
 
+    public static PrettyTime resolvePrettyTime(final Context context) {
+        return new PrettyTime(getAppLocale(context));
+    }
+
     public static String relativeTime(final OffsetDateTime offsetDateTime) {
         return relativeTime(OffsetDateTimeKt.toCalendar(offsetDateTime));
     }
diff --git a/app/src/test/java/org/schabi/newpipe/util/LocalizationTest.kt b/app/src/test/java/org/schabi/newpipe/util/LocalizationTest.kt
new file mode 100644
index 000000000..d0a8e7a40
--- /dev/null
+++ b/app/src/test/java/org/schabi/newpipe/util/LocalizationTest.kt
@@ -0,0 +1,39 @@
+package org.schabi.newpipe.util
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.ocpsoft.prettytime.PrettyTime
+import java.text.SimpleDateFormat
+import java.time.OffsetDateTime
+import java.time.ZoneOffset
+import java.util.GregorianCalendar
+import java.util.Locale
+
+class LocalizationTest {
+
+    @Test
+    fun `After initializing pretty time relativeTime() with a Calendar must work`() {
+        val reference = SimpleDateFormat("yyyy/MM/dd").parse("2021/1/1")
+        Localization.initPrettyTime(PrettyTime(reference, Locale.ENGLISH))
+
+        val actual = Localization.relativeTime(GregorianCalendar(2021, 1, 6))
+
+        assertEquals("1 month from now", actual)
+    }
+
+    @Test(expected = NullPointerException::class)
+    fun `relativeTime() must fail without initializing pretty time`() {
+        Localization.relativeTime(GregorianCalendar(2021, 1, 6))
+    }
+
+    @Test
+    fun `relativeTime() with a OffsetDateTime must work`() {
+        val reference = SimpleDateFormat("yyyy/MM/dd").parse("2021/1/1")
+        Localization.initPrettyTime(PrettyTime(reference, Locale.ENGLISH))
+
+        val offset = OffsetDateTime.of(2021, 1, 6, 0, 0, 0, 0, ZoneOffset.UTC)
+        val actual = Localization.relativeTime(offset)
+
+        assertEquals("5 days from now", actual)
+    }
+}