Improve the notification message and frequency.

sunset-alarm

@@ -94,8 +94,12 @@ fetch_sunset_time() {
 # Show alert via fallback chain: fyi -> notify-send -> wall
 ###############################################################################
 show_alert() {
-    TITLE="Sunset Alarm"
-    MESSAGE="Sunset is at $(date -d @${SUNSET_EPOCH} +"%H:%M")."
+    ALERT=$(date -d @${ALERT_WINDOW_START} +"%H:%M")
+    SUNSET=$(date -d @${SUNSET_EPOCH} +"%H:%M")
+    PLURAL=$(if (( $MINUTES != 1 )); then echo "s"; fi)
+
+    TITLE="Sunset Alarm ($ALERT)"
+    MESSAGE="It's ${MINUTES} minute${PLURAL} to $SUNSET."
 
     persistent="-t 0 --wait"
     icon="-i weather-clear -u critical"
@@ -159,13 +163,12 @@ while true; do
     if [ "$CURRENT_TIME" -ge "$ALERT_WINDOW_START" ] && \
        [ "$CURRENT_TIME" -lt "$MIDNIGHT" ]; then
         show_alert
-        sleep 5  # Re-alert every 5 minutes while in alert window
-    else
-        sleep 60
     fi
 
     # Reset when we've passed midnight so we fetch new time tomorrow
     if [ "$CURRENT_TIME" -ge "$MIDNIGHT" ]; then
         LAST_DATE=""
     fi
+
+    sleep 10
 done