diff --git a/apps/global/virtualsensors.yaml b/apps/global/virtualsensors.yaml
index 4efbf40..02acde4 100644
--- a/apps/global/virtualsensors.yaml
+++ b/apps/global/virtualsensors.yaml
@@ -10,6 +10,7 @@ virtual_sensors:
 
     binary_sensor.is_apple_tv_on: media_player.apple_tv != 'off'
     binary_sensor.someone_home: person.maeva == 'home' or person.pierre == 'home'
+    binary_sensor.is_dark_outside: sun.sun == 'below_horizon'
 
     # living room sensors
     value_selector.living_room_ambiance_light: