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The waning moon.

At 11:09:39 UT Sunday 24 March 2019
the waning moon’s phase is

84.92% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 11.1775 in decimal hours.
The Julian date is 2458567.3491767.
The sun’s ecliptic longitude is 3.52708581793797 degrees.
Its mean anomaly is 78.8794551489 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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