Noun
stardate (plural stardates)
English Wikipedia has an article on:stardateWikipedia
(science fiction) A date according to the fictional system of time measurement developed for Star Trek.
Data went to Starfleet Academy from 2341–45 (he describes himself as "Class of '78" to Riker in "Encounter at Farpoint", but that may refer to the stardate and not the year that he graduated) and then served in Starfleet aboard the USS Trieste. Source: Internet
On board the Enterprise Dr. Crusher was appointed chief medical officer of the Federation starship Enterprise-D in 2364, and joined the ship at Farpoint Station with Wesley, reporting on board on stardate 41154. Source: Internet