Julian day number

noun

Definition of Julian day number

: the number of a day in the Julian day calendar (as 2,436,934 for January 1, 1960)

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Cite this Entry

“Julian day number.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Julian%20day%20number. Accessed 29 Nov. 2021.

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