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 04:19:21 UT Friday 02 March 2018
the moon’s phase was


Time Zone:   

Some factors that go into this equation:

Universal Time is 4.33916666666666 in decimal hours.
The Julian date was 2458180.49965556.
The sun’s ecliptic longitude was 341.530486044589 degrees.
Its mean anomaly was 57.1530871784 degrees.
The moon’s true longitude was 2683.65729421602 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

© 1997–2018 by 3IP.