Or the Fiesta Nacional de la Vendimia, or just vendimia, in a lot of Latin countries. Or the Kadazan Festival in Malaysia. Or Greek Thesmophoria. Or Incwala in Swaziland. Or Korea's Chuseok Harvest Festival.
Yeah, everybody's got one. But you have a psychotically religious country like the US that has either made all their holidays about God or making money or both, and their Thanksgiving is a complete anomaly. And it's the longest vacation period people get all year. Some may last longer and have cooler features, but few have had to survive the commercialization onslaught and religious fervor of the American Thanksgiving.