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The waxing moon.

At 09:40:05 UT Friday 18 January 2019
the waxing moon’s phase is

88.86% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 9.68472222222221 in decimal hours.
The Julian date is 2458502.38859803.
The sun’s ecliptic longitude is 298.007132926919 degrees.
Its mean anomaly is 14.7510706308 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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