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At 19:29:50 UT Wednesday 31 January 2018
the moon’s phase was
is 19.5138888888889 in decimal hours.
The Julian date was 2458150.49904625.
The sun’s ecliptic longitude was 311.880510556608 degrees.
Its mean anomaly was 28.2068716886 degrees.
The moon’s true longitude was 2295.41996065305 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.)