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The new moon.

At 13:08:07 UT Monday 04 February 2019
the moon was



Some factors that go into this equation:

Universal Time is 13.1519444444444 in decimal hours.
The Julian date was 2458518.5001.
The sun’s ecliptic longitude was 315.422821230555 degrees.
Its mean anomaly was 31.6494697901 degrees.
The moon’s mean longitude 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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