diff --git a/watch-faces/complication/moon_phase_face.c b/watch-faces/complication/moon_phase_face.c
index 9e9591d3..c7a550dc 100644
--- a/watch-faces/complication/moon_phase_face.c
+++ b/watch-faces/complication/moon_phase_face.c
@@ -184,10 +184,19 @@ bool moon_phase_face_loop(movement_event_t event, void *context) {
             state->offset += 86400;
             _update(state, state->offset);
             break;
-	case EVENT_ALARM_LONG_PRESS:
-	    state->offset = 0;
+	    case EVENT_ALARM_LONG_PRESS:
+	        state->offset = 0;
             _update(state, state->offset);
-	    break;
+	        break;
+        case EVENT_LIGHT_BUTTON_DOWN:
+            break;
+        case EVENT_LIGHT_BUTTON_UP:
+            state->offset -= 86400;
+            _update(state, state->offset);
+            break;
+        case EVENT_LIGHT_LONG_PRESS:
+            movement_illuminate_led();
+            break;
         case EVENT_TIMEOUT:
             // QUESTION: Should timeout reset offset to 0?
             break;
diff --git a/watch-faces/complication/moon_phase_face.h b/watch-faces/complication/moon_phase_face.h
index b0209829..2a32ed6b 100644
--- a/watch-faces/complication/moon_phase_face.h
+++ b/watch-faces/complication/moon_phase_face.h
@@ -47,6 +47,9 @@
  * each button press, and both the text and the graphical representation will
  * display the moon phase for that day. Try pressing the Alarm button 27 times
  * now, just to visualize what the moon will look like over the next month.
+ * Pressing the Light button will move back in time.
+ * 
+ * Holding the Light button will illuminate the display.
  */
 
 #include "movement.h"
diff --git a/watch-faces/sensor/activity_logging_face.c b/watch-faces/sensor/activity_logging_face.c
index 3d5eb1cf..65d717f1 100644
--- a/watch-faces/sensor/activity_logging_face.c
+++ b/watch-faces/sensor/activity_logging_face.c
@@ -86,6 +86,13 @@ void activity_logging_face_activate(void *context) {
 bool activity_logging_face_loop(movement_event_t event, void *context) {
     activity_logging_state_t *state = (activity_logging_state_t *)context;
     switch (event.event_type) {
+        case EVENT_LIGHT_LONG_PRESS:
+            movement_illuminate_led();
+            break;
+        case EVENT_LIGHT_BUTTON_DOWN:
+            state->display_index = (state->display_index + ACTIVITY_LOGGING_NUM_DAYS - 1) % ACTIVITY_LOGGING_NUM_DAYS;
+            _activity_logging_face_update_display(state);
+            break;
         case EVENT_ALARM_BUTTON_DOWN:
             state->display_index = (state->display_index + 1) % ACTIVITY_LOGGING_NUM_DAYS;
             // fall through
diff --git a/watch-faces/sensor/activity_logging_face.h b/watch-faces/sensor/activity_logging_face.h
index 6c5b74fb..f4f58b6e 100644
--- a/watch-faces/sensor/activity_logging_face.h
+++ b/watch-faces/sensor/activity_logging_face.h
@@ -40,6 +40,8 @@
  *
  * A short press of the Alarm button moves backwards in the data log, showing yesterday's active minutes,
  * then the day before, etc. going back 14 days.
+ * A short press of the Light button moves forward in the data log, looping around if we're on the most-recent day.
+ * Holding the Light button will illuminate the display.
  *
  */