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The full moon.

At 14:22:09 UT Thursday 12 December 2019
the moon was

FULL

 


Some factors that go into this equation:

Universal Time is 14.3858333333333 in decimal hours.
The Julian date was 2458830.49846659.
The sun’s ecliptic longitude was 260.294793931741 degrees.
Its mean anomaly was 338.2364717647 degrees.
The moon’s mean longitude was 318.351648 degrees.

These calculations incorporate the switch to the English New Style (N.S.)—i.e., Gregorian— calendar after Wednesday, 02 September 1752; the next day became Thursday, 14 September, skipping eleven days. (Please also note that, while fairly accurate, these calculations remain a bit buggy.)

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