September's full moon sets the stage for a Halloween blue moon. (Image: © Shutterstock)
This week, for the first time in three years, the September full moon is in a unique situation: it's happening so early in the month — a timing that gives it an entirely different name, the corn moon, instead of the harvest moon — that it sets the stage for October to have two full moons, meaning a rare blue moon will shine this Halloween, on Oct. 31.
This full moon, named for the East Coast corn harvest, will reach peak fullness at 1:22 a.m. EDT (5:22 UTC) on Wednesday, Sept. 2, according to NASA.
Usually, September's full moon is known as the harvest moon, as it's typically the full moon closest to the first day of fall, known as the fall equinox. But this year, the autumnal equinox falls on Sept. 22, making the Oct. 1 full moon the harvest moon, according to Lehigh Valley Live, a news outlet in Easton, Pennsylvania. Read more >>