how to set Thunderbird to use 24h format
1) vim /home/knp/bin/thunderbird
#!/bin/sh
export LC_TIME=ru_RU # or whatever you want
[ "$LC_ALL" != "$LC_TIME" ] && unset LC_ALL # only necessary if set to something different from LC_TIME
exec /usr/bin/thunderbird_sh "$@"
2) chown +x /home/knp/bin/thunderbird
3) sudo mv /usr/bin/thunderbird /usr/bin/thunderbird_sh
P.S. you can obtain the list of all supported locales by executing 2 commands:
1) for x in `locale -a`; do echo "$x"; LC_ALL=$x locale -k d_fmt t_fmt; echo "==="; done > ~/datefmts.out
2) less ~/datefmts.out
#!/bin/sh
export LC_TIME=ru_RU # or whatever you want
[ "$LC_ALL" != "$LC_TIME" ] && unset LC_ALL # only necessary if set to something different from LC_TIME
exec /usr/bin/thunderbird_sh "$@"
2) chown +x /home/knp/bin/thunderbird
3) sudo mv /usr/bin/thunderbird /usr/bin/thunderbird_sh
P.S. you can obtain the list of all supported locales by executing 2 commands:
1) for x in `locale -a`; do echo "$x"; LC_ALL=$x locale -k d_fmt t_fmt; echo "==="; done > ~/datefmts.out
2) less ~/datefmts.out