diff --git a/res/values/strings.xml b/res/values/strings.xml
index f844f41c870..76dcf883a8d 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2526,6 +2526,18 @@
     <string name="night_display_summary_on_auto_mode_custom">Will turn off automatically at <xliff:g name="time" example="10 PM">%1$s</xliff:g></string>
     <!-- Display settings screen, summary of night display when on and will turn off automatically at sunrise. [CHAR LIMIT=NONE] -->
     <string name="night_display_summary_on_auto_mode_twilight">Will turn off automatically at sunrise</string>
+    <!-- Display settings screen, activation button action for manual mode. [CHAR LIMIT=40] -->
+    <string name="night_display_activation_on_manual">Turn on now</string>
+    <!-- Display settings screen, deactivation button action for manual mode. [CHAR LIMIT=40] -->
+    <string name="night_display_activation_off_manual">Turn off now</string>
+    <!-- Display settings screen, activation button action for sunset-to-sunrise schedule [CHAR LIMIT=40] -->
+    <string name="night_display_activation_on_twilight">Turn on until sunrise</string>
+    <!-- Display settings screen, deactivation button action for sunset-to-sunrise schedule [CHAR LIMIT=40] -->
+    <string name="night_display_activation_off_twilight">Turn off until sunset</string>
+    <!-- Display settings screen, activation button action for custom schedule [CHAR LIMIT=40] -->
+    <string name="night_display_activation_on_custom">Turn on until <xliff:g name="time" example="6 AM">%1$s</xliff:g></string>
+    <!-- Display settings screen, deactivation button action for custom schedule [CHAR LIMIT=40] -->
+    <string name="night_display_activation_off_custom">Turn off until <xliff:g name="time" example="10 PM">%1$s</xliff:g></string>
 
     <!-- Sound & display settings screen, setting option name to change screen timeout -->
     <string name="screen_timeout">Sleep</string>