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The new moon.

At 11:45:09 UT Saturday 28 January 2017
the moon’s phase was

NEW

Time Zone:   

Some factors that go into this equation:

Universal Time is 11.7691666666667 in decimal hours.
The Julian date was 2457781.50238706.
The sun’s ecliptic longitude was 308.753550585015 degrees.
Its mean anomaly was 25.17057933064 degrees.
The moon’s true longitude was 314.354441942253 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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