When a month has two full moons, the second is often called a
Blue Moon.
The full moon countdown clock will show you how many days, hours, and seconds until the next full moon.
There is an exact full moon time when the moon is officially full. The time is reported in Greenwich Mean Time.
Daily moon phase screensaver for your computer With
the
moon phase screensaver you can be notified about the
upcoming full moon and the full moon name.
The full moon nearest the autumnal equinox (about September 23).
Near the time of the autumnal equinox, the angle of the moon's orbit
relative to the Earth's horizon is at its minimum, causing the full
moon to rise above the horizon much faster than usual. Since the
difference of the moon's rising time on successive nights barely
varies, the moon appears to rise at nearly the same hour for several
nights in succession. Because the harvest moon, like any full moon,
must rise near the hour of sunset, harvest workers in the Northern
Hemisphere may be aided by bright moonlight after sunset on several
successive evenings. A similar effect is observed in corresponding
southern latitudes around March 21.
