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The full moon.

At 01:18:55 UT Thursday 12 December 2019
the moon’s phase was

FULL

Time Zone:   

Some factors that go into this equation:

Universal Time is 1.33194444444444 in decimal hours.
The Julian date was 2458830.4996207.
The sun’s ecliptic longitude was 259.742077227033 degrees.
Its mean anomaly was 337.7003663033 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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