Thanksgiving is celebrated in the USA.
Thanksgiving Day is traditionally a time for giving thanks for the harvest, so is really harvest festival. However, in the US and Canada it is celebrated as THE holiday of the year, when everyone tries to get home to spend the day with relatives where a large festive meal with turkey is prepared. Even though Thanksgiving is religious in origin, it is identified as a secular holiday in the modern world. The location and date of the very first Thanksgiving celebration has been a topic of contention. The earliest attested celebration took place in 1565 at St. Augustine, Florida. However, the traditional one occurred in 1621 at Plymouth Plantation.
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