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The waxing moon.

At 20:33:09 UT Sunday 09 December 2018
the waxing moon’s phase is

6.18% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 20.5691666666667 in decimal hours.
The Julian date is 2458461.56184937.
The sun’s ecliptic longitude is 257.754688168158 degrees.
Its mean anomaly is 335.7721857042 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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