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The new moon.

At 20:40:24 UT Tuesday 15 May 2018
the moon’s phase was

NEW

Time Zone:   

Some factors that go into this equation:

Universal Time is 20.69 in decimal hours.
The Julian date was 2458253.50181945.
The sun’s ecliptic longitude was 54.981512007805 degrees.
Its mean anomaly was 130.7624980364 degrees.
The moon’s true longitude was 3659.87084653213 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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