Troubleshooting

Why does my Google Calendar show the wrong time zone?

By the Atlas team · 3 June 2026 · 5 min read

When Google Calendar shows the wrong time, it's almost always one of four causes, and each has a quick fix. Here's how to find the culprit and put it right on desktop and mobile.

The short answer: Google Calendar follows your device's time zone, so a wrong time usually means the device is set to the wrong zone or is auto-updating while you travel. The other common causes are an incorrect primary time zone in Calendar settings, a confusing secondary time zone on display, or a single event created in another zone. Check the device first, then Calendar's settings, then the individual event.

A calendar that quietly shows the wrong time is worse than no calendar, because you trust it. The good news: the cause is nearly always one of a small set, and you can rule them out in a couple of minutes.

First, check your device

Google Calendar takes its lead from the device you are on. If your Mac, PC or phone is set to the wrong time zone, or set to update automatically and you have recently travelled, the calendar will follow it. On macOS, check System Settings → General → Date & Time; on Windows, Settings → Time & language. Make sure the zone is correct before touching Google Calendar itself.

Fix it on desktop

  1. Open Google Calendar and confirm your device time zone is correct (above).
  2. Click the gear icon (top right) and choose Settings.
  3. Under General, open Time zone. Set your primary time zone to your current location.
  4. If a second clock is confusing you, turn off Display secondary time zone. If you rarely travel, you can also turn off Ask to update your primary time zone so it stops prompting you.
  5. Reload Google Calendar so the change applies.

Fix a single event stuck in another zone

Sometimes the calendar is fine but one event is wrong. This happens when the event was created while your device was in a different zone, for example during a trip. Google pins the event to the zone it was made in, so it looks shifted when you get home.

  1. Open the event and click edit.
  2. Click the event time. A time zone dropdown appears next to it.
  3. Set it to the correct zone and save. The event will move to the right local time.

Fix it on mobile

The Google Calendar app follows your phone's time zone by default. Open the app's Settings → General and check Use device time zone. If it is on, fix the phone's time zone in the system settings; if you prefer a fixed zone, turn it off and set the zone manually in the app.

If an invite from someone else looks wrong

The sender may have created it in their own zone. The event time you see should already be converted to yours, but if it looks off, confirm the time zone on the event and check it against the real date, especially near a daylight-saving change.

Stop the problem at the source for team meetings

Most wrong-time-zone headaches come from creating events while thinking in the wrong zone in the first place. When you schedule across time zones, it helps to see everyone's local time as you pick the slot, rather than converting in your head and hoping. Atlas shows each teammate's local time on your Mac and writes the meeting to your calendar in the correct zone for everyone, so there is nothing to mis-set. For the full method, see how to schedule a meeting across time zones.

Frequently asked

Why is my Google Calendar in the wrong time zone?
Most often your device's time zone is wrong or auto-updating while travelling, and Calendar follows the device. Other causes: an incorrect primary time-zone setting, a confusing secondary time zone on display, or an event created in a different zone.
How do I change the time zone in Google Calendar?
On desktop: gear icon → Settings → General → Time zone, then set your primary time zone. On mobile, the app follows your phone; toggle "Use device time zone" in the Calendar app settings.
Why did my event move to a different time?
If it was created while your device was in another zone, Google pins it to that zone, so it appears to shift when you return home. Open the event and set the time-zone dropdown to the correct zone.
Written by the Atlas team

We build Atlas, a native macOS app for scheduling meetings across time zones — find the overlap, respect everyone's hours, and add it to your calendar in one tap.

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