main, ensure the alarm ID gets refreshed on the screen by using setState() at the end of the function.

lib/main.dart

@@ -63,6 +63,11 @@ class SunsetAlarmApp extends StatelessWidget {
   }
 }
 
+int dateAsId(DateTime d) => d.year * 10000 + d.month * 100 + d.day;
+int todayAsId() {
+  return dateAsId(DateTime.now());
+}
+
 class HomeScreen extends StatefulWidget {
   const HomeScreen({super.key});
 
@@ -88,12 +93,7 @@ class _HomeScreenState extends State<HomeScreen> {
   String? _minuteErrorText;
   bool _validTime = false;
 
-  static int _alarmId = 20260000;
+  int _alarmId = 20260000;
-
-  int dateAsId(DateTime d) => d.year * 10000 + d.month * 100 + d.day;
-  int todayAsId() {
-    return dateAsId(DateTime.now());
-  }
 
   @override
   void initState() {
@@ -365,6 +365,10 @@ class _HomeScreenState extends State<HomeScreen> {
     } else {
       _showSnack('Platform Not Detected - Contact Developer');
     }
+    // If we made it this far, refresh the alarm ID on the screen.
+    setState(() {
+      _alarmId = _alarmId;
+    });
   }
 
   Future<void> _toggleAlarm(bool value) async {
@@ -623,6 +627,7 @@ class _HomeScreenState extends State<HomeScreen> {
                             : "Sunset Alarm"
                         : "Enter Valid Time",
                   ),
+                  // .toString().replaceRange(4, 4, '-').replaceRange(7, 7, '-')
                 ),
                 value: _validTime ? _alarmEnabled : false,
                 onChanged: _validTime ? _toggleAlarm : null,