Trouble while editing videos metadata and time zones

[wywh]

When travelling I try to make sure all cameras are set to the same local time at the destination.

I have not paid much attention nor used the timezone/offset in image files. But you can add and adjust it via GraphicConverter > Set Exif date to > User Defined Date...> Time Zone so Offset times are added and set accordingly:

Code Select Expand

[ExifIFD]       DateTimeOriginal                : 2020:01:01 12:00:00
[ExifIFD]       OffsetTime                      : +02:00
[ExifIFD]       OffsetTimeOriginal              : +02:00
[ExifIFD]       OffsetTimeDigitized             : +02:00
After travelling I check and adjust that all image dates are about right at local time there. Then check and adjust movie dates so they sort correctly with the images in Photos.app.

Photos.app can display the timezone when it is added as a custom preference to macOS Language & Region > Advanced... > Times > drag the Time Zone to the Medium length format and set its format as desired (+02:00, for example). In the attached screenshot the default and the modified display for the same image. [edit: I now noticed that Photos.app displays the computer timezone OR that offset if it is present. Oh, another thing to look for if images sort incorrectly.]
 
- Matti