Julian Day

American  

noun

Astronomy.

1. 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: J.D.

   January 1, 1965, at noon, Greenwich Civil Time, was Julian Day 2,438,762.0.

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Example Sentences

Dunham’s version of the 13th century, which she crafted alongside the production designer Kave Quinn and costume designer Julian Day, is filled with color and flowers — “one step away from Coachella,” according to Dunham.

From New York Times • Sep. 23, 2022

The costumes, designed by Julian Day, were similarly interpretations intended to serve the fantasy element of the story.

From Los Angeles Times • Apr. 25, 2019

In this system, October 12, 2011, is Julian Day 2,455,847.

From "1491" by Charles C. Mann