Thanksgiving, also known as Thanksgiving Day, is a harvest festival. Traditionally, it is a time to give thanks for the harvest and express gratitude in general. It is primarily a North American holiday which has generally become a national secular holiday with religious origins.
The dates and whereabouts of the first Thanksgiving celebration are a topic of modest contention. Though the earliest attested Thanksgiving celebration was on September 8, 1565 in what is now Saint Augustine, Florida, the traditional "first Thanksgiving" is venerated as having occurred at the site of Plymouth Plantation, in 1621.
Today, Thanksgiving is celebrated on the second Monday of October in Canada and on the fourth Thursday of November in the United States. Thanksgiving dinner is held on this day, usually as a gathering of family members.
Canada
Thanksgiving in Canada, occurs on the second Monday in October and Canadians give thanks at the close of the harvest season. Although some people thank God for this bounty[3], the holiday is mainly considered secular.
United States
Most people celebrate by gathering at home with family or friends for a holiday feast. Though the holiday's origins can be traced to harvest festivals which have been celebrated in many cultures since ancient times, the American holiday has religious undertones related to the deliverance of the English settlers by Native Americans after the brutal winter at Plymouth, Massachusetts.
The period from Thanksgiving Day to New Year's Day often is called the holiday season.
.