English word stardate comes from English date, English star

Detailed word origin of stardate

Dictionary entry	Language	Definition
date	English (eng)	The date palm.. The fruit of the date palm, Phoenix dactylifera, somewhat in the shape of an olive, containing a soft, sweet pulp and enclosing a hard kernel. (intransitive) To become old, especially in such a way as to fall out of fashion, become less appealing or attractive, etc.. (intransitive, with from) To have beginning; to begin; to be dated or reckoned.. (reciprocal, by extension) To [...]
star	English (eng)	(acting) An actor in a leading role.. (astrology) A planet supposed to influence one's destiny.. (geometry) A concave polygon with regular, pointy protrusions and indentations, generally with five or six points.. (printing) An asterisk (*).. (star) A luminous celestial body, made up of plasma (particularly hydrogen and helium) and having a spherical shape. Depending on context the sun may or [...]
stardate	English (eng)	(science fiction) A date according to the fictional system of time measurement developed for Star Trek.