Julian days

A form of Julian day — 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.

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Meanings

noun
  1. pluralplural of Julian day
Cite this entry
APA

Julian days. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Julian%20days

MLA

“Julian days.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Julian%20days. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Julian days,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Julian%20days.

Source: Julian days on Wiktionary, CC BY-SA 4.0.