At 14:23:21 UT Friday 18 August 2017
the waning moon’s phase is
is 14.4058333333333 in decimal hours.
The Julian date is 2457983.63252146.
The sun’s ecliptic longitude is 145.808564795643 degrees.
Its mean anomaly is 224.37962963452 degrees.
The moon’s true longitude is 103.112155296915 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.)