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At 16:35:04 UT Monday 21 January 2019
the moon’s phase will be
is 16.6011111111111 in decimal hours.
The Julian date will be 2458505.49659772.
The sun’s ecliptic longitude will be 301.352048629569 degrees.
Its mean anomaly will be 17.9920593844 degrees.
The moon’s mean longitude will be 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.)