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The new moon.

At 14:59:22 UT Monday 18 December 2017
the moon’s phase will be


Time Zone:   

Some factors that go into this equation:

Universal Time is 15.0061111111111 in decimal hours.
The Julian date will be 2458105.50104288.
The sun’s ecliptic longitude will be 266.914813664818 degrees.
Its mean anomaly will be 344.6532597055 degrees.
The moon’s true longitude will be 1710.61601463851 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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