Traditionally, the September full Moon in the Northern Hemisphere is the Harvest Moon, which is the full Moon that occurs closest to the autumnal equinox. In two years out of three, the Harvest Moon comes in September, but in some years it occurs in October. And that’s precisely what’s happening in 2017.
This year, the Harvest Moon occurs on October 5th at 2:40 p.m. EDT, which is only 13 days from the equinox (September 22 at 4:02 p.m. EDT).
When September’s full Moon is not the Harvest Moon, it is referred to as the Corn Moon, a name attributed to Native Americans because it marked when corn was supposed to be harvested.
The September Corn Moon turns full at 3:03 a.m EDT on Wednesday, September 6th, but will appear full for about 3 days.
So get outside and enjoy this 3rd and final full Moon of the summer season!