Yes it is. If you take a look at admin => Templates => Language Vars => DATE_FORMAT
You can lookup the format of DATE_FORMAT by looking at the header of admin/GT/Date.pm which is essentially this:
Code:
# yyyy - four digit year as in 1999
# yy - two digit year as in 99
# y - two digit year without leading 0
# mmmm - long month name as in January
# mmm - short month name as in Jan
# mm - numerical month name as in 01
# m - same as mm, but without leading 0's for months 1-9
# dddd - long day name as in Sunday
# ddd - short day name as in Sun
# dd - numerical date
# d - numerical date without leading 0
# HH - numerical hours (24 hour time)
# H - numerical hours without leading 0 (24 hour time)
# hh - numerical hours (12 hour time)
# h - numerical hours without leading 0 (12 hour time)
# MM - numerical minutes
# M - numerical minutes without leading 0
# ss - numerical seconds
# s - numerical seconds without leading 0
# tt - AM or PM (use with 12 hour time)
# o - + or - gm offset
Adrian