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The waning moon.

At 21:24:21 UT Saturday 04 November 2017
the waning moon’s phase was

99.37% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 21.4225 in decimal hours.
The Julian date was 2458062.49366867.
The sun’s ecliptic longitude was 222.684604651954 degrees.
Its mean anomaly was 301.5482883889 degrees.
The moon’s true longitude was 1131.81225406487 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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