To look up the phase of the moon for any date,
just fill out the form below, then hit "Find Phase."

The full moon.

At 09:10:11 UT Monday 09 March 2020
the moon will be



Some factors that go into this equation:

Universal Time is 9.1863888888889 in decimal hours.
The Julian date will be 2458918.49805399.
The sun’s ecliptic longitude will be 349.26065241684 degrees.
Its mean anomaly will be 64.7599050155 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.)

 Send comments to

© 1997–2020 by 3IP.