Hello,
I tried to change the time format to 24 hour using this guide here:
https://confluence.atlassian.com/display/JIRA050/Customising+the+Look+and+Feel
But it didn't work.
The changes I made are the following:
jira.date.time.picker.java.format = dd.MM.yy HH:mm
jira.date.time.picker.javascript.format = %e.%b.%y %H:%M
Afterwards I restarted JIRA too, but no changes. In the Look&Feel site there was still the old format.
What can I do to change it properly?