I noticed this in a message somebody had edited and confirmed it in one of my own sig test posts.
If you edit a message the format of the 'message edited' line is :
This message has been edited by MangyTiger, 01-13-2005 22:57 AM
22:57 AM seems a bit of a strange time to me
(it was 22:57 or 10:57 PM when I edited it so the time is right - just the 24 hour vs. AM/PM format isn't).
Confused ? You will be...