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Julian day

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Julian day [′jül·yən ¦dā]
(astronomy)
The number of each day, as reckoned consecutively since the beginning of the present Julian period on January 1, 4713 B.C.; it is used primarily by astronomers to avoid confusion due to the use of different calendars at different times and places; the Julian day begins at noon, 12 hours later than the corresponding civil day.


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For example, there are 21 periods in 1980 which cover 180 consecutive days (from Julian day 126 to 305), and 17 intervals which cover 141 days (the span from Julian day 162 to 302).
Jayne Devlin, of Amadeu,s and Julian Day, of Compton Verney.
At Julian Day 168 (June 17), the time of maximum GI and known to be the around the expected time of the major spawning event for M.
 
 
 
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