Loi Krathong, Thailand & Laos: Loi Krathong means “to float a basket” and in Thailand, along with parts of Laos, this festival involves sending decorated baskets (known as krathongs) down river and decorating the home with candles.
Punkin Days in Floydada, Texas: Floydada—known as Texas's "Pumpkin Capital"—grows about 15 million pounds of pumpkins per year. The area's most common varieties are jack-o-lantern, sugar, mini, and Big Mac (which can grow to well over 100 pounds).
Stowe: What to do: The hills are alive with the sound of autumn in Stowe. At least they are for fans of The Sound of Music: the real-life inspiration for the fictional Von Trapps settled in nonfictional Vermont.
Mid-Autumn Festival, China and Vietnam: When the full moon arrives between September and October, Chinese and Vietnamese partake in the Mid-Autumn Festival (also appropriately known as the Moon Festival).