Set your location and default calendar to get started.
You can change your location or default calendar anytime in Settings.
Add the Hijri date too if you'd like the option to recur this event by the Hijri calendar instead of the Gregorian one.
Gregorian and Hijri years drift apart by about 11 days each year -- pick which date this event should actually repeat on. The other date is kept as a label only.
A leap-day (Feb 29) date shows on Feb 28 in non-leap years.
