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The full moon.

At 21:23:39 UT Thursday 15 August 2019
the moon was



Some factors that go into this equation:

Universal Time is 21.4108333333333 in decimal hours.
The Julian date was 2458711.49866083.
The sun’s ecliptic longitude was 142.739035703046 degrees.
Its mean anomaly was 221.2329435497 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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