adding a new alert time to the iPhone calendar

I want to create a 12 hour alert and an 18 hour alert so that I get alerted for calendar items the evening before something happens early the next day. Is there a way to add alert times to the iPhone list?

iPhone 15 Pro Max, iOS 18

Posted on Jul 17, 2025 7:46 AM

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Posted on Jul 17, 2025 8:08 AM

The built in calendar doesn't allow you to edit that list. However, there are third-party calendars that are more configurable. WeekCal allows you to add your own choices. I'm sure there are others.

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adding a new alert time to the iPhone calendar

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