Julian day (English, noun)
expansion: Julian day (plural Julian days)
Senses:
glosses: A date expressed as a real number of days counted with GMT noon on 1 January 4713 BCE in proleptic Julian calendar (November 24, 4714 BCE, in the proleptic Gregorian calendar) as zero; used primarily by astronomers and historians to compare events recorded in different cultures.
Forms:
form: Julian days
tags: plural