TONIGHT FORSEPTEMBER 18, 2013
Simply stated, the Harvest Moon is the full moon that falls the closest to autumnal equinox, which in 2013 comes on September 22. So the full moon that comes tonight and early tomorrow – September 18-19, 2013 – is the Harvest Moon. The moon reaches the crest of its full phase at 11:13 Universal Time on September 19 (6:13 a.m. CDT, in other words before sunrise tomorrow for most of us in the U.S.).
In eastern Asia, on the other hand, the moon will turn precisely full after sunset on September 19. In that part of the world, the full Harvest Moon will be said to take place on the night of September 19-20, coinciding with the yearly Mid-Autumn Festival, sometimes called the Moon Festival.
|Day and night sides of Earth at the instant of the September 2013 full moon |
(2013 September 19 at 11:13 Universal Time). Image via Earth and Moon Viewer