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The full moon.

At 04:19:21 UT Tuesday 02 January 2018
the moon’s phase was

FULL

Time Zone:   

Some factors that go into this equation:

Universal Time is 4.33916666666666 in decimal hours.
The Julian date was 2458121.4999278.
The sun’s ecliptic longitude was 281.734887277627 degrees.
Its mean anomaly was -1.00010684839998 degrees.
The moon’s mean longitude was 318.351648 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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