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The waning moon.

At 07:13:23 UT Friday 10 April 2020
the moon’s phase is

WANING GIBBOUS (92.94% full)

 

Some factors that go into this equation:

Universal Time is 7.23972222222221 in decimal hours.
The Julian date is 2458950.42937293.
The sun’s ecliptic longitude is 20.892987514576 degrees.
Its mean anomaly is 96.2206734676 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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