Thread: New Nova?
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Old 24-01-2018, 08:40 PM
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Terry B
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Join Date: Mar 2006
Location: Armidale
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Quote:
Originally Posted by skysurfer View Post
You mean UTC Oh. 12 is the American way to determine both midnight and noon.
Unless the JD is New Zealand time zone based.
Btw, what a stupid invention those timezones, but that is a different topic.
No. Lifted from wikipedia.
The Julian Day Number (JDN) is the integer assigned to a whole solar day in the Julian day count starting from noon Universal time, with Julian day number 0 assigned to the day starting at noon on Monday, January 1, 4713 BC, proleptic Julian calendar (November 24, 4714 BC, in the proleptic Gregorian calendar),[1][2][3] a date at which three multi-year cycles started (which are: Indiction, Solar, and Lunar cycles) and which preceded any dates in recorded history.[4] For example, the Julian day number for the day starting at 12:00 UT on January 1, 2000, was 2,451,545.
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