Wrong date and time formats

[ChristophWurst]

Steps to reproduce

1. Set your system and browser to language=German and locale=Germany
2. Open the Calendar app with Firefox desktop
3. Create a new event

Expected behavior

Date shows DD-MM-YYYY and time in 24h format

Actual behavior

Date shows MM-DD-YYYY and time in 12h format

Calendar app version

7.x

Additional info

With #6423 we replaced the custom (and buggy) datepicker with a native one. The objectives were usability and accessibility. Most platforms come with a very capable date and time picker. Firefox only has a date picker, which was considered an acceptable trade-off, because keyboard input is always possible.

This is an upstream issue with Firefox. I'm filing the ticket here for transparency and to have a central point for updates/discussion.

Relevant Firefox ticket(s):

• Poor support for datetime-local (no time, and null-value if time not selected) https://bugzilla.mozilla.org/show_bug.cgi?id=1850383

You can also test the datetime picker at https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/datetime-local. It works well with Chrome but not with Firefox. The problem does not appear to be specific to Firefox.

[tmh-grunwald-markus]

I'm using Chromium Version 133.0.6943.126 (Official Build) built on Debian GNU/Linux 12 (bookworm) (64-bit) and have exactly the same error.

[ghnp5]

Came here to report the same :)

Just set my locale to "Portuguese (Portugal)" (pt_PT), and the date format for new events is still MM/DD/YYYY, instead of DD/MM/YYYY.

Thanks!

[GK-774]

It´s not just Firefox, same effect with Edge. Setting the Locale (German (Austria) in my case) just does nothing, the date format remains at MM/DD/YYYY as already mentioned by ghnp5. Even in the profile the birth date remains at MM/DD/YYYY when changing the locale. There should be a setting for the date and time format independent of the locale anyway.

[ChristophWurst]

Thank you for your feedback.