Based on the Earth's orbit around the sun, this "official" season begins at the Autumnal Equinox and ends at the Winter Solstice .
Americans generally follow two different calendars to mark the arrival of autumn:
Based on the Earth's orbit around the sun, this "official" season begins at the Autumnal Equinox and ends at the Winter Solstice .
Americans generally follow two different calendars to mark the arrival of autumn: