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The waxing moon.

At 02:03:29 UT Saturday 22 December 2018
the waxing moon’s phase will be

99.36% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 2.07472222222222 in decimal hours.
The Julian date will be 2458475.49356685.
The sun’s ecliptic longitude will be 270.190610631519 degrees.
Its mean anomaly will be 347.8260596592 degrees.
The moon’s mean longitude will be 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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