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At 16:31:50 UT Thursday 26 December 2019
the moon’s phase was
is 16.5472222222222 in decimal hours.
The Julian date was 2458843.5025327.
The sun’s ecliptic longitude was 274.630297304583 degrees.
Its mean anomaly was 352.124300056 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.)