I didn't see anything in the forum or bugzilla.
I have two XP/FF clients, including my own that display events using 24 hour time display in the zimbra client calendar body.
The clock display on the left is using 12 hour format but the events are using 24 hour clock format.
How do I change it back? I assume this is a client issue, but I can't find anything in windows other than regional settings that allows a change from 24 to 12 hour clock format.
Of note, the client I'm working on was orginally set to use English UK in regional settings, but it's now English Canada.