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At 23:49:11 UT Saturday 25 May 2019
the waning moon’s phase is
is 23.8363888888889 in decimal hours.
The Julian date is 2458629.06578376.
The sun’s ecliptic longitude is 64.495849248395 degrees.
Its mean anomaly is 140.5094745936 degrees.
The moon’s mean longitude is 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.)