diff --git a/core/java/android/app/IUiModeManager.aidl b/core/java/android/app/IUiModeManager.aidl
index a3e0845af0cec..f5809ba627ff1 100644
--- a/core/java/android/app/IUiModeManager.aidl
+++ b/core/java/android/app/IUiModeManager.aidl
@@ -68,4 +68,9 @@ interface IUiModeManager {
      * Tells if Night mode is locked or not.
      */
     boolean isNightModeLocked();
+
+    /**
+    * @hide
+    */
+    boolean setNightModeActivated(boolean active);
 }
diff --git a/core/java/android/app/UiModeManager.java b/core/java/android/app/UiModeManager.java
index 83247875c8a55..d8c030d7aacf6 100644
--- a/core/java/android/app/UiModeManager.java
+++ b/core/java/android/app/UiModeManager.java
@@ -473,4 +473,18 @@ public class UiModeManager {
         }
         return true;
     }
+
+    /**
+     * @hide*
+     */
+    public boolean setNightModeActivated(boolean active) {
+        if (mService != null) {
+            try {
+                return mService.setNightModeActivated(active);
+            } catch (RemoteException e) {
+                throw e.rethrowFromSystemServer();
+            }
+        }
+        return false;
+    }
 }
diff --git a/packages/SystemUI/res/values/strings.xml b/packages/SystemUI/res/values/strings.xml
index d58f83fb8a3b4..1044ede009b15 100644
--- a/packages/SystemUI/res/values/strings.xml
+++ b/packages/SystemUI/res/values/strings.xml
@@ -894,6 +894,10 @@
     <string name="quick_settings_ui_mode_night_label">Dark theme</string>
     <!-- QuickSettings: Label for the dark theme tile when enabled by battery saver. [CHAR LIMIT=40] -->
     <string name="quick_settings_ui_mode_night_label_battery_saver">Dark theme\nBattery saver</string>
+    <!-- QuickSettings: Secondary text for when the Dark Mode will be enabled at sunset. [CHAR LIMIT=20] -->
+    <string name="quick_settings_dark_mode_secondary_label_on_at_sunset">On at sunset</string>
+    <!-- QuickSettings: Secondary text for when the Dark Mode will be on until sunrise. [CHAR LIMIT=20] -->
+    <string name="quick_settings_dark_mode_secondary_label_until_sunrise">Until sunrise</string>
 
     <!-- QuickSettings: NFC tile [CHAR LIMIT=NONE] -->
     <string name="quick_settings_nfc_label">NFC</string>
diff --git a/packages/SystemUI/src/com/android/systemui/qs/tiles/UiModeNightTile.java b/packages/SystemUI/src/com/android/systemui/qs/tiles/UiModeNightTile.java
index dd0ea5ef17f49..dc9a2ce1beef5 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/tiles/UiModeNightTile.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/tiles/UiModeNightTile.java
@@ -21,7 +21,7 @@ import android.content.Intent;
 import android.content.res.Configuration;
 import android.provider.Settings;
 import android.service.quicksettings.Tile;
-import android.widget.Switch;
+import android.text.TextUtils;
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.systemui.R;
@@ -79,24 +79,33 @@ public class UiModeNightTile extends QSTileImpl<QSTile.BooleanState> implements
             return;
         }
         boolean newState = !mState.value;
-        mUiModeManager.setNightMode(newState ? UiModeManager.MODE_NIGHT_YES
-                : UiModeManager.MODE_NIGHT_NO);
+        mUiModeManager.setNightModeActivated(newState);
         refreshState(newState);
     }
 
     @Override
     protected void handleUpdateState(BooleanState state, Object arg) {
+        int uiMode = mUiModeManager.getNightMode();
         boolean powerSave = mBatteryController.isPowerSave();
+        boolean isAuto = uiMode == UiModeManager.MODE_NIGHT_AUTO;
         boolean nightMode = (mContext.getResources().getConfiguration().uiMode
-                & Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES;
+                        & Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES;
 
+        if (isAuto) {
+            state.secondaryLabel = mContext.getResources().getString(nightMode
+                    ? R.string.quick_settings_dark_mode_secondary_label_until_sunrise
+                    : R.string.quick_settings_dark_mode_secondary_label_on_at_sunset);
+        } else {
+            state.secondaryLabel = null;
+        }
         state.value = nightMode;
         state.label = mContext.getString(powerSave
                 ? R.string.quick_settings_ui_mode_night_label_battery_saver
                 : R.string.quick_settings_ui_mode_night_label);
-        state.contentDescription = state.label;
         state.icon = mIcon;
-        state.expandedAccessibilityClassName = Switch.class.getName();
+        state.contentDescription = TextUtils.isEmpty(state.secondaryLabel)
+                ? state.label
+                : TextUtils.concat(state.label, ", ", state.secondaryLabel);
         if (powerSave) {
             state.state = Tile.STATE_UNAVAILABLE;
         } else {
diff --git a/services/core/java/com/android/server/UiModeManagerService.java b/services/core/java/com/android/server/UiModeManagerService.java
index 9d71896ef08b1..e6d303b8f5b93 100644
--- a/services/core/java/com/android/server/UiModeManagerService.java
+++ b/services/core/java/com/android/server/UiModeManagerService.java
@@ -56,8 +56,8 @@ import android.service.vr.IVrManager;
 import android.service.vr.IVrStateCallbacks;
 import android.util.ArraySet;
 import android.util.Slog;
-
 import com.android.internal.R;
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.app.DisableCarModeActivity;
 import com.android.internal.messages.nano.SystemMessageProto.SystemMessage;
 import com.android.internal.notification.SystemNotificationChannels;
@@ -65,6 +65,7 @@ import com.android.internal.util.DumpUtils;
 import com.android.server.twilight.TwilightListener;
 import com.android.server.twilight.TwilightManager;
 import com.android.server.twilight.TwilightState;
+import com.android.server.wm.WindowManagerInternal;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
@@ -72,6 +73,8 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
 
+import static android.content.Intent.ACTION_SCREEN_OFF;
+
 final class UiModeManagerService extends SystemService {
     private static final String TAG = UiModeManager.class.getSimpleName();
     private static final boolean LOG = false;
@@ -85,6 +88,10 @@ final class UiModeManagerService extends SystemService {
 
     private int mLastBroadcastState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
     private int mNightMode = UiModeManager.MODE_NIGHT_NO;
+    // we use the override auto mode
+    // for example: force night mode off in the night time while in auto mode
+    private int mNightModeOverride = mNightMode;
+    protected static final String OVERRIDE_NIGHT_MODE = Secure.UI_NIGHT_MODE + "_override";
 
     private Map<Integer, String> mCarModePackagePriority = new HashMap<>();
     private boolean mCarModeEnabled = false;
@@ -119,6 +126,7 @@ final class UiModeManagerService extends SystemService {
     private TwilightManager mTwilightManager;
     private NotificationManager mNotificationManager;
     private StatusBarManager mStatusBarManager;
+    private WindowManagerInternal mWindowManager;
 
     private PowerManager.WakeLock mWakeLock;
 
@@ -128,6 +136,17 @@ final class UiModeManagerService extends SystemService {
         super(context);
     }
 
+    @VisibleForTesting
+    protected UiModeManagerService(Context context, WindowManagerInternal wm,
+                                   PowerManager.WakeLock wl, TwilightManager tm,
+                                   boolean setupWizardComplete) {
+        super(context);
+        mWindowManager = wm;
+        mWakeLock = wl;
+        mTwilightManager = tm;
+        mSetupWizardComplete = setupWizardComplete;
+    }
+
     private static Intent buildHomeIntent(String category) {
         Intent intent = new Intent(Intent.ACTION_MAIN);
         intent.addCategory(category);
@@ -189,8 +208,23 @@ final class UiModeManagerService extends SystemService {
         public void onTwilightStateChanged(@Nullable TwilightState state) {
             synchronized (mLock) {
                 if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
-                    updateComputedNightModeLocked();
-                    updateLocked(0, 0);
+                    final IntentFilter intentFilter =
+                            new IntentFilter(ACTION_SCREEN_OFF);
+                    getContext().registerReceiver(mOnScreenOffHandler, intentFilter);
+                }
+            }
+        }
+    };
+
+    private final BroadcastReceiver mOnScreenOffHandler = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            synchronized (mLock) {
+                updateLocked(0, 0);
+                try {
+                    getContext().unregisterReceiver(mOnScreenOffHandler);
+                } catch (IllegalArgumentException e) {
+                    // we ignore this exception if the receiver is unregistered already.
                 }
             }
         }
@@ -227,8 +261,10 @@ final class UiModeManagerService extends SystemService {
     private final ContentObserver mDarkThemeObserver = new ContentObserver(mHandler) {
         @Override
         public void onChange(boolean selfChange, Uri uri) {
-            final int mode = Secure.getIntForUser(getContext().getContentResolver(),
-                    Secure.UI_NIGHT_MODE, mNightMode, 0);
+            int mode = Secure.getIntForUser(getContext().getContentResolver(), Secure.UI_NIGHT_MODE,
+                    mNightMode, 0);
+            mode = mode == UiModeManager.MODE_NIGHT_AUTO
+                    ? UiModeManager.MODE_NIGHT_YES : UiModeManager.MODE_NIGHT_NO;
             SystemProperties.set(SYSTEM_PROPERTY_DEVICE_THEME, Integer.toString(mode));
         }
     };
@@ -247,6 +283,7 @@ final class UiModeManagerService extends SystemService {
         final PowerManager powerManager =
                 (PowerManager) context.getSystemService(Context.POWER_SERVICE);
         mWakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, TAG);
+        mWindowManager = LocalServices.getService(WindowManagerInternal.class);
 
         // If setup isn't complete for this user listen for completion so we can unblock
         // being able to send a night mode configuration change event
@@ -313,6 +350,16 @@ final class UiModeManagerService extends SystemService {
                 false, mDarkThemeObserver, 0);
     }
 
+    @VisibleForTesting
+    protected IUiModeManager getService() {
+        return mService;
+    }
+
+    @VisibleForTesting
+    protected Configuration getConfiguration() {
+        return mConfiguration;
+    }
+
     // Records whether setup wizard has happened or not and adds an observer for this user if not.
     private void verifySetupWizardCompleted() {
         final Context context = getContext();
@@ -347,8 +394,11 @@ final class UiModeManagerService extends SystemService {
         if (mSetupWizardComplete) {
             mNightMode = Secure.getIntForUser(context.getContentResolver(),
                     Secure.UI_NIGHT_MODE, defaultNightMode, userId);
+            mNightModeOverride = Secure.getIntForUser(context.getContentResolver(),
+                    OVERRIDE_NIGHT_MODE, defaultNightMode, userId);
         } else {
             mNightMode = defaultNightMode;
+            mNightModeOverride = defaultNightMode;
         }
 
         return oldNightMode != mNightMode;
@@ -474,14 +524,30 @@ final class UiModeManagerService extends SystemService {
             try {
                 synchronized (mLock) {
                     if (mNightMode != mode) {
+                        if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
+                            try {
+                                getContext().unregisterReceiver(mOnScreenOffHandler);
+                            } catch (IllegalArgumentException e) {
+                                // we ignore this exception if the receiver is unregistered already.
+                            }
+                        }
                         // Only persist setting if not in car mode
                         if (!mCarModeEnabled) {
                             Secure.putIntForUser(getContext().getContentResolver(),
                                     Secure.UI_NIGHT_MODE, mode, user);
+                            Secure.putIntForUser(getContext().getContentResolver(),
+                                    OVERRIDE_NIGHT_MODE, mNightModeOverride, user);
                         }
 
                         mNightMode = mode;
-                        updateLocked(0, 0);
+                        mNightModeOverride = mode;
+                        //on screen off will update configuration instead
+                        if (mNightMode != UiModeManager.MODE_NIGHT_AUTO) {
+                            updateLocked(0, 0);
+                        } else {
+                            getContext().registerReceiver(
+                                    mOnScreenOffHandler, new IntentFilter(ACTION_SCREEN_OFF));
+                        }
                     }
                 }
             } finally {
@@ -521,6 +587,34 @@ final class UiModeManagerService extends SystemService {
             if (!DumpUtils.checkDumpPermission(getContext(), TAG, pw)) return;
             dumpImpl(pw);
         }
+
+        @Override
+        public boolean setNightModeActivated(boolean active) {
+            synchronized (mLock) {
+                final long ident = Binder.clearCallingIdentity();
+                try {
+                    if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
+                        try {
+                            getContext().unregisterReceiver(mOnScreenOffHandler);
+                        } catch (IllegalArgumentException e) {
+                        }
+                        mNightModeOverride = active
+                                ? UiModeManager.MODE_NIGHT_YES : UiModeManager.MODE_NIGHT_NO;
+                    } else if (mNightMode == UiModeManager.MODE_NIGHT_NO
+                            && active) {
+                        mNightMode = UiModeManager.MODE_NIGHT_YES;
+                    } else if (mNightMode == UiModeManager.MODE_NIGHT_YES
+                            && !active) {
+                        mNightMode = UiModeManager.MODE_NIGHT_NO;
+                    }
+                    updateConfigurationLocked();
+                    sendConfigurationLocked();
+                    return true;
+                } finally {
+                    Binder.restoreCallingIdentity(ident);
+                }
+            }
+        }
     };
 
     void dumpImpl(PrintWriter pw) {
@@ -1022,6 +1116,20 @@ final class UiModeManagerService extends SystemService {
             if (state != null) {
                 mComputedNightMode = state.isNight();
             }
+            if (mNightModeOverride == UiModeManager.MODE_NIGHT_YES && !mComputedNightMode) {
+                mComputedNightMode = true;
+                return;
+            }
+            if (mNightModeOverride == UiModeManager.MODE_NIGHT_NO && mComputedNightMode) {
+                mComputedNightMode = false;
+                return;
+            }
+
+            mNightModeOverride = mNightMode;
+            final int user = UserHandle.getCallingUserId();
+            Secure.putIntForUser(getContext().getContentResolver(),
+                    OVERRIDE_NIGHT_MODE, mNightModeOverride, user);
+
         }
     }
 
diff --git a/services/tests/uiservicestests/src/com/android/server/UiModeManagerServiceTest.java b/services/tests/uiservicestests/src/com/android/server/UiModeManagerServiceTest.java
new file mode 100644
index 0000000000000..338f837b9b442
--- /dev/null
+++ b/services/tests/uiservicestests/src/com/android/server/UiModeManagerServiceTest.java
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 20019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server;
+
+import android.app.IUiModeManager;
+import android.content.BroadcastReceiver;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.os.PowerManager;
+import android.os.RemoteException;
+import android.testing.AndroidTestingRunner;
+import android.testing.TestableLooper;
+import com.android.server.twilight.TwilightManager;
+import com.android.server.wm.WindowManagerInternal;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import static android.app.UiModeManager.MODE_NIGHT_AUTO;
+import static android.app.UiModeManager.MODE_NIGHT_NO;
+import static android.app.UiModeManager.MODE_NIGHT_YES;
+import static junit.framework.TestCase.assertFalse;
+import static junit.framework.TestCase.assertTrue;
+import static org.junit.Assert.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(AndroidTestingRunner.class)
+@TestableLooper.RunWithLooper
+public class UiModeManagerServiceTest extends UiServiceTestCase {
+    private UiModeManagerService mUiManagerService;
+    private IUiModeManager mService;
+    @Mock
+    private ContentResolver mContentResolver;
+    @Mock
+    private WindowManagerInternal mWindowManager;
+    @Mock
+    private Context mContext;
+    @Mock
+    private Resources mResources;
+    @Mock
+    TwilightManager mTwilightManager;
+    @Mock
+    PowerManager.WakeLock mWakeLock;
+    private Set<BroadcastReceiver> mScreenOffRecievers;
+
+    @Before
+    public void setUp() {
+        mUiManagerService = new UiModeManagerService(mContext, mWindowManager, mWakeLock,
+                mTwilightManager, true);
+        mScreenOffRecievers = new HashSet<>();
+        mService = mUiManagerService.getService();
+        when(mContext.checkCallingOrSelfPermission(anyString()))
+                .thenReturn(PackageManager.PERMISSION_GRANTED);
+        when(mContext.getResources()).thenReturn(mResources);
+        when(mContext.getContentResolver()).thenReturn(mContentResolver);
+        when(mContext.registerReceiver(any(), any())).then(inv -> {
+            mScreenOffRecievers.add(inv.getArgument(0));
+            return null;
+        });
+    }
+
+    @Test
+    public void setAutoMode_screenOffRegistered() throws RemoteException {
+        try {
+            mService.setNightMode(MODE_NIGHT_NO);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        mService.setNightMode(MODE_NIGHT_AUTO);
+        verify(mContext).registerReceiver(any(BroadcastReceiver.class), any());
+    }
+
+    @Test
+    public void setAutoMode_screenOffUnRegistered() throws RemoteException {
+        try {
+            mService.setNightMode(MODE_NIGHT_AUTO);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        try {
+            mService.setNightMode(MODE_NIGHT_NO);
+        } catch (SecurityException e) { /*we should ignore this update config exception*/ }
+        given(mContext.registerReceiver(any(), any())).willThrow(SecurityException.class);
+        verify(mContext).unregisterReceiver(any(BroadcastReceiver.class));
+    }
+
+    @Test
+    public void setNightModeActive_fromNightModeYesToNoWhenFalse() throws RemoteException {
+        try {
+            mService.setNightMode(MODE_NIGHT_YES);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        try {
+            mService.setNightModeActivated(false);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        assertEquals(MODE_NIGHT_NO, mService.getNightMode());
+    }
+
+    @Test
+    public void setNightModeActive_fromNightModeNoToYesWhenTrue() throws RemoteException {
+        try {
+            mService.setNightMode(MODE_NIGHT_NO);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        try {
+            mService.setNightModeActivated(true);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        assertEquals(MODE_NIGHT_YES, mService.getNightMode());
+    }
+
+    @Test
+    public void setNightModeActive_autoNightModeNoChanges() throws RemoteException {
+        try {
+            mService.setNightMode(MODE_NIGHT_AUTO);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        try {
+            mService.setNightModeActivated(true);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        assertEquals(MODE_NIGHT_AUTO, mService.getNightMode());
+    }
+
+    @Test
+    public void isNightModeActive_nightModeYes() throws RemoteException {
+        try {
+            mService.setNightMode(MODE_NIGHT_YES);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        assertTrue(isNightModeActivated());
+    }
+
+    @Test
+    public void isNightModeActive_nightModeNo() throws RemoteException {
+        try {
+            mService.setNightMode(MODE_NIGHT_NO);
+        } catch (SecurityException e) { /* we should ignore this update config exception*/ }
+        assertFalse(isNightModeActivated());
+    }
+
+    private boolean isNightModeActivated() {
+        return (mUiManagerService.getConfiguration().uiMode
+                & Configuration.UI_MODE_NIGHT_YES) != 0;
+    }
+}