s/n15296687

Information
has gloss	(noun) (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded epoch, date of reference
lexicalization	eng: date of reference
lexicalization	eng: epoch
subclass of	(noun) the particular day, month, or year (usually according to the Gregorian calendar) that an event occurred; "he tried to memorizes all the dates for his history class" date

Links
has category	(noun) the branch of physics that studies celestial bodies and the universe as a whole astronomy, uranology