diff --git a/www/js/control/ProfileSettings.tsx b/www/js/control/ProfileSettings.tsx
index 0c6101c48..4a33a6a68 100644
--- a/www/js/control/ProfileSettings.tsx
+++ b/www/js/control/ProfileSettings.tsx
@@ -297,10 +297,10 @@ const ProfileSettings = () => {
     if (!uiConfig?.reminderSchemes)
       return logWarn('In updatePrefReminderTime, no reminderSchemes yet, skipping');
     if (storeNewVal) {
-      const m = DateTime.fromISO(newTime);
+      const dt = DateTime.fromJSDate(newTime);
       // store in HH:mm
       setReminderPrefs(
-        { reminder_time_of_day: m.toFormat('HH:mm') },
+        { reminder_time_of_day: dt.toFormat('HH:mm') },
         uiConfig.reminderSchemes,
         isScheduling,
         setIsScheduling,
diff --git a/www/js/splash/notifScheduler.ts b/www/js/splash/notifScheduler.ts
index b059aa3cd..00f24571d 100644
--- a/www/js/splash/notifScheduler.ts
+++ b/www/js/splash/notifScheduler.ts
@@ -24,7 +24,11 @@ const calcNotifTimes = (scheme, dayZeroDate, timeOfDay): DateTime[] => {
         .plus({ days: d })
         .toFormat('yyyy-MM-dd');
       const notifTime = DateTime.fromFormat(date + ' ' + timeOfDay, 'yyyy-MM-dd HH:mm');
-      notifTimes.push(notifTime);
+      if (notifTime.isValid) {
+        notifTimes.push(notifTime);
+      } else {
+        displayErrorMsg('Cannot schedule notifs with invalid time of day: ' + timeOfDay);
+      }
     }
   }
   return notifTimes;