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The waning moon.

At 06:30:59 UT Sunday 09 August 2020
the moon’s phase is

WANING GIBBOUS (72.26% full)


Some factors that go into this equation:

Universal Time is 6.53305555555555 in decimal hours.
The Julian date is 2459071.22259386.
The sun’s ecliptic longitude is 137.112484949267 degrees.
Its mean anomaly is 215.4549817515 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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