To look up the phase of the moon for any date,
just fill out the form below, then hit "Find Phase."
At 00:36:47 UT Saturday 04 May 2019
the waning moon’s phase will be
is 0.629722222222222 in decimal hours.
The Julian date will be 2458607.50945032.
The sun’s ecliptic longitude will be 43.303579132084 degrees.
Its mean anomaly will be 118.8578138739 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.)