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The waxing moon.

At 01:07:22 UT Wednesday 23 September 2020
the moon’s phase is

WAXING CRESCENT (38.63% full)

 


Some factors that go into this equation:

Universal Time is 1.13944444444444 in decimal hours.
The Julian date is 2459115.88631359.
The sun’s ecliptic longitude is 180.472396039604 degrees.
Its mean anomaly is 259.5876045168 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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