You can set the date format used in your jforum-custom.conf file with the dateTime.format property. E.g.:
dateTime.format = dd MMM yy HH\:mm zzz
Will produce: 28 Mar 07 9:45 EDT
Note the time zone / month name are based on your server's locale setting.
The format
string is used by the
Java SimpleDateFormat class. See the Javadocs for this for details on all the formatting elements.
[originally posted on jforum.net by monroe]