English Explanatory Dictionary

Julian day

English dictionary entry

Meanings

noun
  1. 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.

Word forms

Julian day Julian days

Synonyms

JD Julian date
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