Thursday, April 5th is the day of the historic flight of the Phoenix, piloted by Zefram Cochrane. This opened the door for warp flight and then the first contact with the Vulcans. For Star Trek Online players, on April 5th you were able to take a mission to visit the Utopia Planitia Shipyards over Mars. There you were able to see the Enterprise-F and meet her new crew. When the visit was complete, you recieve as a reward a non-combat “pet” that will follow your ship in space: the first warp capable ship, the Phoenix.
This event was for the Federation only, but for the Klingons there was a Klingon Defense Force only mission called “Alpha” involving the Hirogen, ensuring that there was a little something for all during First Contact Day.