Change toUTCString to toISOString and change default to 365 days.

src/scripts/settings/userSettings.js

@@ -444,7 +444,7 @@ export class UserSettings {
             // Explicitly return 0 to avoid returning 100 because 0 is falsy.
             return 0;
         } else {
-            return maxDaysForNextUp || 100;
+            return maxDaysForNextUp || 365;
         }
     }