User blog comment:Spawny0908/The next triple XP is....../@comment-113.212.175.94-20110424120342/@comment-3455248-20110424123250

This particular post is for an event from last week. The next known official event is Friday May 6, 16:00 - 19:00 Eastern which I think would start Saturday May 7 somewhere around 05:00 - 07:00 depending on where you are in Australia. Besides the official events, all others are "surprise" announcements on Rockstar's Twitter feed, generally just a few hours in advance. For a list of official events: http://www.rockstargames.com/newswire/article/14741/the-official-social-club-multiplayer-events-series-calendar-for-.html