My calendar appointments automatically default to an hour for the end of appointment. I am running on iOS 11 on my iPhone.

How do I change the default time to just 1/2 hour?

1 Answer 1


I don’t see anything in the settings app for changing this for the calendars. Only the default reminder times have a preference.

I use Siri for this and it works great for me

  • Hey Siri, make an appointment at 10 A.M. for 15 minutes.
  • add a recurring appointment for 30 minutes starting at 9 A.M. on the 28th of every month
    • change the title to review finances

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