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The full moon.

At 12:55:23 UT Friday 10 January 2020
the moon was



Some factors that go into this equation:

Universal Time is 12.9397222222222 in decimal hours.
The Julian date was 2458859.49902953.
The sun’s ecliptic longitude was 289.754741560898 degrees.
Its mean anomaly was 6.76085528359999 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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