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At 01:39:34 UT Wednesday 13 June 2018
the waning moon’s phase will be
is 1.67611111111111 in decimal hours.
The Julian date will be 2458282.50869736.
The sun’s ecliptic longitude will be 82.033696114266 degrees.
Its mean anomaly will be 158.5653968168 degrees.
The moon’s true longitude will be 4031.33132053275 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.)