Most people think of the Harvest Moon as the September moon. The Harvest Moon does usually fall in September, but this year it’s in October.

The Harvest Moon is the full moon closest to the autumnal equinox on September 22, so it always occurs in September or October. This year the September full moon is 20 days before the equinox, while the October moon is only 10 days after the equinox. October’s full moon is the Harvest Moon.