I understood the mecanism (but not the involved code):
This problem is easily reproductible: installing a fresh Ubuntu from CD,
choosing "English" as the language and the keymap"Belgian", makes everytime the
region language in German.
** Attachment added: "screenshot.png"
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day of week in german despite i configured the system in english
Status in language-pack-en package in Ubuntu:
I chose the english language and live in Belgium. So I chose Brussels for the
Time Zone, and the Belgian keymap.
The Ubuntu date & time applet, in the top bar of the Ubuntu desktop
interface shows me "Son HH:MM", Son standing for "Sonntag" which is
german. I don't get why there is german in my interface since I
configured this language nowhere but English.
Having the day of week in English.
My configuration to reproduce the problem
Here is the region & language configuration as seen in the settings pannel:
Language: English (United States)
Formats : Belgien
Input Sources: Belgian
In the "Date & Time" settings:
Time Zone: CEST (Brussels, Belgium)
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