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The new moon.

At 04:02:00 UT Wednesday 20 September 2017
the moon’s phase was


Time Zone:   

Some factors that go into this equation:

Universal Time is 4.05 in decimal hours.
The Julian date was 2458016.5001.
The sun’s ecliptic longitude was 177.387012707663 degrees.
Its mean anomaly was 256.48069240573 degrees.
The moon’s true longitude was 536.802469443578 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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