Tool-tip timestamp shows a Z
Okay, I'm sure I'm just missing something obvious... but I've been thinking about it for a day now and I still haven't gotten it!
On the StackOverflow sites, why do some dates have "Z" after them? E.g., on my recent history: http://superuser.com/users/recent/20269 - why does it say "2010-01-11 08:10:54Z to 2010-01-11 23:59:59Z" instead of just "2010-01-11 08:10:54 to 2010-01-11 23:59:59"? Is it supposed to be an indicator of timezone, or of the fact that it's using 24-hour time rather than 12-hour?