This year, look for September’s full Harvest Moon to rise in the southeast just after sunset on Monday, September 20—just two days before the fall equinox!
The full Moon that happens nearest to the fall equinox (September 22 or 23) always takes on the name “Harvest Moon.” Unlike other full Moons, this full Moon rises at nearly the same time—around sunset—for several evenings in a row, giving farmers several extra evenings of moonlight and allowing them to finish their harvests before the frosts of fall arrive.
Autumn Moon (Cree)
Falling Leaves Moon (Ojibwe)
Leaves Turning Moon (Anishinaabe)
Moon of Brown Leaves (Lakota)
Yellow Leaf Moon (Assiniboine)
Source
The full Moon that happens nearest to the fall equinox (September 22 or 23) always takes on the name “Harvest Moon.” Unlike other full Moons, this full Moon rises at nearly the same time—around sunset—for several evenings in a row, giving farmers several extra evenings of moonlight and allowing them to finish their harvests before the frosts of fall arrive.
Autumn Moon (Cree)
Falling Leaves Moon (Ojibwe)
Leaves Turning Moon (Anishinaabe)
Moon of Brown Leaves (Lakota)
Yellow Leaf Moon (Assiniboine)
Source