Displayed times should be "08:20" and "10:00".
Displayed times are "08:20" and "10".

Calendar app version: (see apps admin page, e.g. 2.0.1) 2.0.0 beta 3
Browser: (e.g. Firefox 48) Firefox 70.0
Operating system: (e.g. Arch Linux) Fedora 29
Operating system: (e.g. Debian 8) DSM 6.2
Web server: (e.g. Apache, Nginx,...) Apache
Database: (e.g. MariaDB, SQLite or PostgreSQL) MariaDB
PHP version: (e.g. 7.0.3) 7.3
Nextcloud Version: (see admin page, e.g. 17.0.2) 18.0.0 Beta 3
Updated from an older installed version or fresh install: Updated
List of activated apps: N/A
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cc @nextcloud/designers @tcitworld
I have to say that i prefer the short version, because it gives more space to the title.
To me it also looks a bit off with the short version.
Ok, let's go for 10:00
TIL: FullCalendar 4 is using Intl.DateTimeFormat
I'm currently unable to fix this due to what i believe to be an upstream issue: https://github.com/fullcalendar/fullcalendar/issues/5213
Postponing this issue to 2.0.1
Upstream is considering it a feature request, not a bug. In that case we will have to create a formattingPlugin and extend https://github.com/fullcalendar/fullcalendar/blob/44c16bb687c911318306f1c1d0e05bfb186cc9a7/packages/core/src/datelib/formatting-native.ts to implement it ourselves.
In germany this looks like this:

These formats should all be the same consistently to be able to quickly skim this list.
Most helpful comment
Ok, let's go for
10:00