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The waxing moon.

At 08:41:20 UT Wednesday 29 January 2020
the waxing moon’s phase is

17.68% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 8.70555555555557 in decimal hours.
The Julian date is 2458877.67677537.
The sun’s ecliptic longitude is 308.901579021317 degrees.
Its mean anomaly is 25.314263589 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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