Thanksgiving is a national holiday that occurs in The United States, on the 4th Thursday of November each year. Thanksgiving first started when the Plymouth colonists and Wampanoag Indians shared an autumn harvest feast in 1621. After the first celebration, 2 years later another one was held in 1623 to commemorate the end of a very long drought that had threatened the years harvest. Then over a century later in 1789, George Washington issued the first Thanksgiving proclamation by the national government of the United States. Many decades after that, the holiday was only celebrated in separate colonies and states. Until 1863 when President Abraham Lincoln declared that Thanksgiving should be a national holiday, in the United States. Many centuries later Thanksgiving is still being celebrated every 4th Thursday of November so we can remember to be grateful for what we have.