Orbit.
Drag the red needle or click a day to pick it. Click a month to open it. Swipe the middle to change year or month.

Orbit

Enter your password to open your calendar.

Notifications

1. Turn on push on this device
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2. Add the cron job
In KAS under Cronjobs, add one that calls this address every 5 minutes (leave out the https://). It sends your reminders.

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3. Test it