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The waxing moon.

At 13:12:57 UT Friday 21 September 2018
the waxing moon’s phase is

88.24% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 13.2325 in decimal hours.
The Julian date is 2458383.38241526.
The sun’s ecliptic longitude is 178.50263342692 degrees.
Its mean anomaly is 257.6047376287 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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