I believe the dates are the 24th - 30th...I know it's on the welcome screen when you log into Multiplayer, but if you're like me you skip it sometimes cause you wanna play so bad. lol
If anyone wants to play, just add me and send me an invite!
This seems to be a trend for UC2 multiplayer. So far since release they've has bonus weekends for every holiday. Usually it includes some kind of skin as well. Too bad I won't be able to take advantage of it this time around.