Wrong timestamp in Get Info window for many photos

I don't have any bursts in my Photos Library for testing, but when I am duplicating a photo, that has GPS coordinates, photos is changing the timezone to the local timezone, where the photo has been taken. I noticed this only after the macOS 12.1 update.

For example, the original image. I took it with the camera timezone set to UTC (GMT+0), and adjusted the timezone in Photos accordingly to reflect the camera time zone:

• The date set by the came has been July 29, 2010, 04:08:29 GMT, and the original is showing this date.
• The duplicate is showing July 28, 2010, 18:08:29 GMT-10.

Whenever I duplicate a photo I now have to remember to set the timezone back to UTC, to have a linear timeline across all cameras and locations.

The original: Photos is showing the date and time correctly, after telling Photos that the camera timezone has been UTC.

I duplicated the photo with ⌘D and the copy has a changed time zone. It is now the local time zone for Hawaii, and the date and time have been converted accordingly. In the Info local time of Hawaii is shown:

This can be very confusing, if we do not change the System preferences so the time zone suffix will be appended to the time.

I suspect, that the duplicates in the bursts are treated similar to the duplicated photos.

Hi

Normally this is a timezone issue.

I notice your photo is taken in Hawaii - where are you when you export the image (Or, more importantly what is the timezone the computer set to)? The export will (I think) try to convert the capture time to local time. If for example the computer timezone is set to GMT then it would add 10 hours to the time. (If I understand correctly - it might go the other way around, I admit to being unclear exactly how this works).

This typically causes problems when you are away from home, and one camera/phone is recording location information, and another doesn't Then the photos taken on the two devices have different times set even when taken at the same time.

Which system version is installed on your Mac?