Unscheduled Downtime - 20:15 - 2016/02/26 (http://community.eveonline.com/news/news-channels/eve-online-news/unscheduled-downtime-20-15-2016-02-26/)
26 February 2016, 8:13 pm
Due to a potential database issue, the Tranquility cluster will be shutting down at 20:15 UTC.
This shutdown is required so that our Operations team can test and fault find to ensure that the database for Tranquility remains healthy.
At this point in time we do not have an estimated time when Tranqulity will be available again, however we will continue to update you on the situation in this forum thread. (https://forums.eveonline.com/default.aspx?g=posts&m=6363426)
Source: EVE Online News