Tranquility reboot on Tuesday, March 13 (http://community.eveonline.com/news.asp?a=single&nid=4926&tid=1)
13 March 2012, 5:11 pm
Tranquility will be taken down for an emergency reboot at 17:30 UTC on March 13 to resolve issues with unexpected node deaths. The scheduled downtime is 15 minutes, TQ will open again at 17:45 UTC. We apologize for any inconvenience.
Source: eveonline.com | news from EVE (http://www.eveonline.com/)