Settings → General, beside the language. An operator reading 2026-07-30 as the
7th of the 30th month is reading their own log wrongly, and that is a display
problem.
Storage stays ISO/ADIF, deliberately and permanently: it is what ADIF
specifies, it sorts correctly as text, and a stored format that followed a UI
preference would make the log unreadable the day the preference changed. Exports
and uploads are untouched.
Two details that decide whether it actually works:
- The columns are rebuilt when the format changes. The formatters are captured
inside AG-Grid's column definitions, so nothing else would notice and the
table would keep the old format until something forced a rebuild.
- main.tsx re-reads the choice after the portable prefs are pulled from the
database. The module reads localStorage at import time, which is BEFORE that
sync — so a copied data/ folder would have shown ISO until the next launch.
UTC is not part of the choice and never will be: a logbook is kept in UTC, and
showing local time would make the display disagree with the QSO's own record
twice a year.