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The new moon.

At 21:00:00 PST* Monday 25 November 2019
the moon was


*05:00:00 Universal Time, Monday, 26 November 2019

Some factors that go into this equation:

Universal Time (UT) was 05:00:00, Tuesday, 11/26/2019.
(That’s 5.01666666666667 in decimal hours.)
The Julian date was 2458813.50240002.
The sun’s ecliptic longitude was 243.672805229134 degrees.
Its mean anomaly was 322.0813351311 degrees.
The moon’s mean longitude on 00 January 1990 was 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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