Time zone problem

Question

Time zone problem

SL 0

When I create a calendar event there is a weird time zone mismatch.

When I create a new calendar event on my phone (Samsung S22) the block on the calendar that you can move might say 4 to 5 pm, but the place on my calendar is between 3 and 4 o'clock. In other words, the spot on my calendar is one hour off from the time listed in the block.

Here's what I'm seeing: https://imgbox.com/0eqBkxUE

Here's what I've tried to fix it:

I've gone into my phone settings and set automatic time zone.
I've turned off automatic time zone and then turned it on again.
I've cleared Outlook cache.
I've uninstalled and reinstalled Outlook.
I've checked the time zone setting on Outlook 365 online (it's correct)
I've restarted my phone.
I've created a meeting and selected the correct time zone to see if it would remember the zone I selected.

-I've removed the widget. I've added the widget.

Nothing works. Every time I create a new appointment in Outlook, the time zone seems to be out of sync somehow.

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Answer 1

Vergil-V 12,440 Microsoft External Staff Moderator

Hi @SL

Thank you for contacting the Microsoft Q&A forum.

Since I do not have access to a Samsung device, I tested this scenario on a non-Samsung Android device using Outlook version 5.2607.0. In that environment, I did not encounter the behavior you described.

Based on insights shared by other users, the one-hour mismatch can sometimes be linked to the Outlook mobile app version or the Android system version. At this time, I have not seen any similar reports or official announcements referring to this situation.

As the testing environment does not include a Samsung model, it would be helpful, if it works for you, to check whether another Samsung device nearby shows the same behavior. Your help would give me valuable insight into whether this occurs on more than one device.

If the behavior continues, you can report it through the Outlook mobile app by following these steps:

User's image

I hope this provides some helpful insight. If you have any updates after checking, please feel free to share them.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

AP 0 Reputation points

2026-03-16T13:01:34.7666667+00:00

I have a similar problem, but I don't use Outlook for Android, I use the native Samsung calendar. I use Smart Switch to synch it to Outlook on Windows desktop. Any appointment that I create on the phone that is within the DST date period synchronizes to Outlook one hour behind the time set in the calendar on the phone. The reverse is not true. If I create an appointment in Outlook and synch it to the phone, the appointment times match between the desktop Outlook and the Samsung calendar on the phone.

If I create the appointment on the phone, then synchronize to Outlook, then edit the appointment on the phone (eg remove some text within the notes section), then synchronize it again, the appointment time in Outlook gets updated to the correct time.

Why is this happening and how to solve this without having to synchronize then edit then synchronize again?
Vergil-V 12,440 Reputation points Microsoft External Staff Moderator

2026-03-16T14:39:31.5466667+00:00

Hi @AP
As mentioned earlier, I don’t currently have a Samsung device available to perform further testing. However, based on my research, you may find the document below helpful, as it could provide additional insight into the issue: Calendar events or time and date are inaccurate on Galaxy phone or tablet

Note: This information is provided as a convenience to you. These sites are not controlled by Microsoft, and Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please ensure that you fully understand the risks before using any suggestions from the above link.

For further assistance, I would also recommend creating a post in the Samsung Community forum. This may allow other users who have the same device to share more accurate insights based on direct access to the device system.

Answer 2

The behavior is consistent with a one‑hour daylight saving time (DST) offset between what Outlook is using and what the device/calendar view is using.

In Outlook and Exchange, all calendar items are stored in UTC and then converted to local time based on:

The time zone and DST rules of the device/Outlook client at creation time.
The current Windows/device time zone and DST settings when the item is displayed.

If there is any mismatch in DST handling between the time zone rules and the current settings, the result is exactly a one‑hour shift between the time shown on the block and the position on the calendar grid. This is the same underlying issue described for Outlook on Windows when “Automatically adjust clock for Daylight Saving Time” is not aligned with the time zone rules: the UTC offset is off by one hour, so the calendar renders items one hour away from the intended slot.

Because all the usual fixes (reinstalling Outlook, clearing cache, toggling automatic time zone, checking Outlook on the web) are already done, the issue is almost certainly in how the device and Outlook mobile are interpreting DST for the selected time zone. The mismatch will be most visible around the days when DST starts or ends and can cause events to appear shifted by one hour in the visual grid while still showing the “correct” time text inside the item.

On affected days, Outlook’s calendar view can show incorrect offsets between time zones and misalign events, as documented for multiple time zones and DST transitions. The same normalization logic applies on mobile: Outlook converts from UTC to local using the device’s time zone and DST rules, so any discrepancy in those rules produces the one‑hour offset being observed.

If the problem persists across reinstalls and correct time zone settings, it is likely a client bug or a DST rules issue specific to the current Outlook for Android build on that device. In that case, the only durable resolution will be a client update from Microsoft that corrects the DST handling for that region/time zone.

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Time zone problem

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