At 12:38:38 UT Friday 18 October 2019
the waning moon’s phase is
is 12.6605555555556 in decimal hours.
The Julian date is 2458775.29967354.
The sun’s ecliptic longitude is 204.86479116412 degrees.
Its mean anomaly is 283.9550123517 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.)