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Jul'ian Day'



Astron.
a serial number equal to the number of days elapsed since January 1, 4713 b.c., proposed by Joseph Scaliger in 1582 and used in astronomical calculations: January 1, 1965, at noon, Greenwich Civil Time, was Julian Day 2,438,762.0. Abbr.: J.D.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Julian calendarJulie

 

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