diff --git a/package.json b/package.json
index 8c0682b6a..f1786e0c3 100644
--- a/package.json
+++ b/package.json
@@ -44,6 +44,7 @@
     "jshashes": "^1.0.7",
     "keytar-prebuild": "^4.0.4",
     "localforage": "^1.5.0",
+    "moment": "^2.20.1",
     "npm": "^5.5.1",
     "qrcode.react": "^0.7.2",
     "rc-progress": "^2.0.6",
diff --git a/src/renderer/constants/action_types.js b/src/renderer/constants/action_types.js
index 3c828f5cb..861957d36 100644
--- a/src/renderer/constants/action_types.js
+++ b/src/renderer/constants/action_types.js
@@ -95,6 +95,7 @@ export const SEARCH_CANCELLED = 'SEARCH_CANCELLED';
 // Settings
 export const DAEMON_SETTINGS_RECEIVED = 'DAEMON_SETTINGS_RECEIVED';
 export const CLIENT_SETTING_CHANGED = 'CLIENT_SETTING_CHANGED';
+export const UPDATE_IS_NIGHT = 'UPDATE_IS_NIGHT';
 
 // User
 export const AUTHENTICATION_STARTED = 'AUTHENTICATION_STARTED';
diff --git a/src/renderer/constants/settings.js b/src/renderer/constants/settings.js
index dcb90ab07..9d0040412 100644
--- a/src/renderer/constants/settings.js
+++ b/src/renderer/constants/settings.js
@@ -11,3 +11,4 @@ export const INSTANT_PURCHASE_ENABLED = 'instantPurchaseEnabled';
 export const INSTANT_PURCHASE_MAX = 'instantPurchaseMax';
 export const THEME = 'theme';
 export const THEMES = 'themes';
+export const AUTOMATIC_DARK_MODE_ENABLED = 'automaticDarkModeEnabled';
diff --git a/src/renderer/index.js b/src/renderer/index.js
index 06621e9de..55017fbc7 100644
--- a/src/renderer/index.js
+++ b/src/renderer/index.js
@@ -10,6 +10,7 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import { Provider } from 'react-redux';
 import { doConditionalAuthNavigate, doDaemonReady, doShowSnackBar } from 'redux/actions/app';
+import { doUpdateIsNightAsync } from 'redux/actions/settings';
 import { doNavigate } from 'redux/actions/navigation';
 import { doDownloadLanguages } from 'redux/actions/settings';
 import { doUserEmailVerify } from 'redux/actions/user';
@@ -90,6 +91,7 @@ document.addEventListener('click', event => {
 });
 
 const init = () => {
+  app.store.dispatch(doUpdateIsNightAsync());
   app.store.dispatch(doDownloadLanguages());
 
   function onDaemonReady() {
diff --git a/src/renderer/page/settings/index.js b/src/renderer/page/settings/index.js
index 29d2b325c..ca277df82 100644
--- a/src/renderer/page/settings/index.js
+++ b/src/renderer/page/settings/index.js
@@ -28,6 +28,7 @@ const select = state => ({
   themes: makeSelectClientSetting(settings.THEMES)(state),
   language: selectCurrentLanguage(state),
   languages: selectLanguages(state),
+  automaticDarkModeEnabled: makeSelectClientSetting(settings.AUTOMATIC_DARK_MODE_ENABLED)(state),
 });
 
 const perform = dispatch => ({
diff --git a/src/renderer/page/settings/view.jsx b/src/renderer/page/settings/view.jsx
index 67471841c..0b061e87a 100644
--- a/src/renderer/page/settings/view.jsx
+++ b/src/renderer/page/settings/view.jsx
@@ -65,6 +65,10 @@ class SettingsPage extends React.PureComponent {
     this.props.setClientSetting(settings.THEME, value);
   }
 
+  onAutomaticDarkModeChange(event) {
+    this.props.setClientSetting(settings.AUTOMATIC_DARK_MODE_ENABLED, event.target.checked);
+  }
+
   onInstantPurchaseEnabledChange(enabled) {
     this.props.setClientSetting(settings.INSTANT_PURCHASE_ENABLED, enabled);
   }
@@ -129,6 +133,7 @@ class SettingsPage extends React.PureComponent {
       showUnavailable,
       theme,
       themes,
+      automaticDarkModeEnabled,
     } = this.props;
 
     if (!daemonSettings || Object.keys(daemonSettings).length === 0) {
@@ -317,6 +322,13 @@ class SettingsPage extends React.PureComponent {
                 </option>
               ))}
             </FormField>
+
+            <FormRow
+              type="checkbox"
+              onChange={this.onAutomaticDarkModeChange.bind(this)}
+              defaultChecked={automaticDarkModeEnabled}
+              label={__('Automatic dark mode (9pm to 8am)')}
+            />
           </div>
         </section>
 
diff --git a/src/renderer/redux/actions/settings.js b/src/renderer/redux/actions/settings.js
index 7f0209132..9397efada 100644
--- a/src/renderer/redux/actions/settings.js
+++ b/src/renderer/redux/actions/settings.js
@@ -4,6 +4,9 @@ import Fs from 'fs';
 import Http from 'http';
 
 import Lbry from 'lbry';
+import moment from 'moment';
+
+const UPDATE_IS_NIGHT_INTERVAL = 10 * 60 * 1000;
 
 export function doFetchDaemonSettings() {
   return dispatch => {
@@ -51,6 +54,29 @@ export function doGetThemes() {
   };
 }
 
+export function doUpdateIsNightAsync() {
+  return dispatch => {
+    dispatch(doUpdateIsNight());
+    const updateIsNightInterval = setInterval(
+      () => dispatch(doUpdateIsNight()),
+      UPDATE_IS_NIGHT_INTERVAL
+    );
+  };
+}
+
+export function doUpdateIsNight() {
+  const momentNow = moment();
+  return {
+    type: ACTIONS.UPDATE_IS_NIGHT,
+    data: { isNight: () => {
+      const startNightMoment = moment('19:00', 'HH:mm');
+      const endNightMoment = moment('8:00', 'HH:mm');
+      return !(momentNow.isAfter(endNightMoment) && momentNow.isBefore(startNightMoment));
+      }
+    },
+  };
+}
+
 export function doDownloadLanguage(langFile) {
   return dispatch => {
     const destinationPath = `${app.i18n.directory}/${langFile}`;
diff --git a/src/renderer/redux/reducers/settings.js b/src/renderer/redux/reducers/settings.js
index 914404bb1..73cf69209 100644
--- a/src/renderer/redux/reducers/settings.js
+++ b/src/renderer/redux/reducers/settings.js
@@ -23,7 +23,9 @@ const defaultState = {
     language: getLocalStorageSetting(SETTINGS.LANGUAGE, 'en'),
     theme: getLocalStorageSetting(SETTINGS.THEME, 'light'),
     themes: getLocalStorageSetting(SETTINGS.THEMES, []),
+    automaticDarkModeEnabled: getLocalStorageSetting(SETTINGS.AUTOMATIC_DARK_MODE_ENABLED, false),
   },
+  isNight: false,
   languages: {},
 };
 
@@ -46,6 +48,11 @@ reducers[ACTIONS.CLIENT_SETTING_CHANGED] = (state, action) => {
   });
 };
 
+reducers[ACTIONS.UPDATE_IS_NIGHT] = (state, action) =>
+  Object.assign({}, state, {
+    isNight: action.data.isNight,
+  });
+
 reducers[ACTIONS.DOWNLOAD_LANGUAGE_SUCCEEDED] = (state, action) => {
   const languages = Object.assign({}, state.languages);
   const { language } = action.data;
diff --git a/src/renderer/redux/selectors/settings.js b/src/renderer/redux/selectors/settings.js
index 0e2887f59..9c90cfac2 100644
--- a/src/renderer/redux/selectors/settings.js
+++ b/src/renderer/redux/selectors/settings.js
@@ -18,7 +18,18 @@ export const selectShowNsfw = makeSelectClientSetting(SETTINGS.SHOW_NSFW);
 
 export const selectLanguages = createSelector(selectState, state => state.languages || {});
 
-export const selectThemePath = createSelector(
-  makeSelectClientSetting(SETTINGS.THEME),
-  theme => `${staticResourcesPath}/themes/${theme || 'light'}.css`
+export const selectTheme = makeSelectClientSetting(SETTINGS.THEME);
+export const selectAutomaticDarkModeEnabled = makeSelectClientSetting(
+  SETTINGS.AUTOMATIC_DARK_MODE_ENABLED
+);
+export const selectIsNight = createSelector(selectState, state => state.isNight);
+
+export const selectThemePath = createSelector(
+  selectTheme,
+  selectAutomaticDarkModeEnabled,
+  selectIsNight,
+  (theme, automaticDarkModeEnabled, isNight) => {
+    const dynamicTheme = automaticDarkModeEnabled && isNight ? 'dark' : theme;
+    return `${staticResourcesPath}/themes/${dynamicTheme || 'light'}.css`;
+  }
 );