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

The waxing moon.

At 13:21:11 UT Saturday 24 March 2018
the waxing moon’s phase is

48.90% full

Time Zone:   

Some factors that go into this equation:

Universal Time is 13.3697222222222 in decimal hours.
The Julian date is 2458201.98903326.
The sun’s ecliptic longitude is 3.85792080580097 degrees.
Its mean anomaly is 79.2082016527 degrees.
The moon’s true longitude is 2972.60108005985 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.