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The new moon.

At 19:23:54 UT Sunday 15 April 2018
the moon’s phase was

NEW

Time Zone:   

Some factors that go into this equation:

Universal Time is 19.415 in decimal hours.
The Julian date was 2458223.5001.
The sun’s ecliptic longitude was 25.788215328583 degrees.
Its mean anomaly was 101.140714829 degrees.
The moon’s true longitude was 3262.28932841298 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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