I installed Debian 11 Gnome. Everything is Ok, except for the language in the Calendar (at top middle of screen).
In Settings > Region and Language, Language is
English and Formats is set to
United States. However, my timezone is
+07 (Bangkok, Thailand) and I suspect because of this my calendar uses Thai language.
locale command outputs the following:
LANG=en_US.UTF-8 LANGUAGE= LC_CTYPE="en_US.UTF-8" LC_NUMERIC=th_TH.UTF-8 LC_TIME=th_TH.UTF-8 LC_COLLATE="en_US.UTF-8" LC_MONETARY=th_TH.UTF-8 LC_MESSAGES="en_US.UTF-8" LC_PAPER=th_TH.UTF-8 LC_NAME=th_TH.UTF-8 LC_ADDRESS=th_TH.UTF-8 LC_TELEPHONE=th_TH.UTF-8 LC_MEASUREMENT=th_TH.UTF-8 LC_IDENTIFICATION=th_TH.UTF-8 LC_ALL=