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The waning moon.

At 11:19:04 UT Wednesday 28 September 2016
the waning moon’s phase is

6.16% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 11.3344444444444 in decimal hours.
The Julian date is 2457659.56159235.
The sun’s ecliptic longitude is 185.764572585526 degrees.
Its mean anomaly is 264.9037484011 degrees.
The moon’s true longitude is 157.025121214424 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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