macOS Calendar shows incorrect time after moving

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Level 1

120 points

macOS Calendar shows incorrect time after moving

Time zone issue? - MacOS Calendar.

We moved from California to Tucson, AZ and now my Mac is showing a 1 hour later MST time when something is added to the calendar. (See photo example). I entered 8:51 AM - but also get 9:51 AM MST.

The Mac's Preferences/Settings are as follows - (see pic)

This may have something to do with Daylight Savings Time - which is NOT used in AZ. I would prefer to just see the local times I enter however - not a different MST variation.

Mac Studio, macOS 14.7

Posted on Nov 20, 2025 6:13 AM

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Answer 1

Top-ranking reply

azaksalmarzur28

Level 3

780 points

Dec 9, 2025 11:46 PM in response to igirl1

Turn OFF Time Zone Support

This is the simplest and cleanest solution for Arizona residents.

On macOS:

Open Calendar
Go to Calendar → Settings
Go to the Advanced tab
Uncheck: “Turn on time zone support”

When Time Zone Support is OFF:

✔ The Calendar always uses your current system time zone only

✔ No more dual-time displays

✔ No more conversions from California time

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