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 16:27:35 UT Saturday 04 November 2017
the moon’s phase will be


Time Zone:   

Some factors that go into this equation:

Universal Time is 16.4763888888889 in decimal hours.
The Julian date will be 2458062.49700122.
The sun’s ecliptic longitude will be 222.47793230822 degrees.
Its mean anomaly will be 301.345158333 degrees.
The moon’s true longitude will be 1128.75621639472 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

© 1997–2017 by 3IP.