Thanksgiving Day Date. It was set for thursday, the 18th of december 1777 and followed the model of the puritan day of humiliation in which people would fast, pray for forgiveness of sins,. The very first national day of thanksgiving was held in 1789, when president george washington proclaimed thursday, november 26 to be a day of.
Thanksgiving day is an annual national holiday in the united states and canada celebrating the harvest and other blessings of the past year. Roosevelt signs a bill officially establishing the fourth thursday in november as thanksgiving day.