Display updated_at in CP relative to configured timezone

[faltjo]

I would like to display a column with the updated_at datetime of each entry of a collection in the CP.

My current approach is to create following field in the blueprint:

          -
            handle: updated_at
            field:
              time_enabled: true
              time_seconds_enabled: true
              type: date
              display: 'Last Modified'
              listable: true
              visibility: read_only

which seems to work.

However the column displays the datetime in UTC and not my currently configured timezone (config('app.timezone')).
How can I achieve that the datetime is displayed relative to the configured timezone AND the column is sortable in CP?

• I tried to use a computed value, but then the list ist not sortable by this column.
• I already tried to use the data format U in the Data Format section in the Date fieldtype.

Example repo and branch

https://github.com/faltjo/statamic-example/tree/show-updated-at-in-cp

This entry shows 2025-07-23 13:27 in the Last Modified column in CP, even though I would expect 2025-07-23 15:27 due to the configured timezone (Europe/Berlin).