Just the one day.
Days before thanksgiving; 5
The first Thanksgiving lasted 3 days.
The first Thanksgiving was observed over a period of three days.
Thanksgiving Unwrapped showed that the first Thanksgivings were celebrated for 3 days.
11
3 days
3 Days
Thanksgiving lasted 3 days because in 1961 when it first come in to place that's how many days it took to marinate the turkey.
Thanksgiving is only one day, the first Thursday every November.
88
3 days
3