Julian day

== English == === Noun === Julian day (plural Julian days) 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. ==== Synonyms ==== JD Julian date ==== Translations ==== === Further reading === Julian day on Wikipedia.Wikipedia