To look up the phase of the moon for any date,
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At 08:56:27 UT Tuesday 19 February 2019
the moon’s phase will be
is 8.95750000000001 in decimal hours.
The Julian date will be 2458534.49879636.
The sun’s ecliptic longitude will be 330.414066367242 degrees.
Its mean anomaly will be 46.2619200077 degrees.
The moon’s mean longitude will be 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.)