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The waning moon.

At 14:17:40 UT Friday 15 November 2019
the waning moon’s phase is

90.51% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 14.3111111111111 in decimal hours.
The Julian date is 2458803.40508746.
The sun’s ecliptic longitude is 232.957651467516 degrees.
Its mean anomaly is 311.6209244023 degrees.
The moon’s mean longitude is 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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