This looks like a bug in GLib. Postler uses %X which is defined as the 'preferred time represenation of the locale' and a look at GLib sources tells me it defaults to 24h and even uses 24h in en_GB.
This looks like a bug in GLib. Postler uses %X which is defined as the 'preferred time represenation of the locale' and a look at GLib sources tells me it defaults to 24h and even uses 24h in en_GB.