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At 01:39:34 UT Tuesday 15 May 2018
the moon’s phase was
is 1.67611111111111 in decimal hours.
The Julian date was 2458253.50257523.
The sun’s ecliptic longitude was 54.217544537946 degrees.
Its mean anomaly was 129.9816234816 degrees.
The moon’s true longitude was 3648.39985178658 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.)