Due to a significant database upgrade in preparation for the transition to Tranquility Tech III, downtime will be occurring early and will be extended on Wednesday, February 24th 2016.
Daily downtime will be moved forward by two hours on the 24th, and will start at 09:00 UTC, lasting one hour. We anticipate that Tranquility will be back online and accepting connections 60 minutes later at 10:00 UTC.
Apologies for any inconvenience the change to daily downtime may cause!
You can read more about the Tranquility Tech III project in these two Dev Blogs:
Source: EVE ONLINE NEWS