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The new moon.

At 15:33:24 UT Tuesday 15 May 2018
the moon’s phase was

NEW

Time Zone:   

Some factors that go into this equation:

Universal Time is 15.5733333333333 in decimal hours.
The Julian date was 2458253.5001.
The sun’s ecliptic longitude was 54.775953818493 degrees.
Its mean anomaly was 130.5523634959 degrees.
The moon’s true longitude was 3656.76788074366 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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