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At 12:58:07 UT Tuesday 20 October 2020
the moon’s phase was
is 12.9852777777778 in decimal hours.
The Julian date was 2459142.69151844.
The sun’s ecliptic longitude was 207.62047688545 degrees.
Its mean anomaly was 286.686575402 degrees.
The moon’s mean longitude was 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.)