By law, Thanksgiving Day in the United States cannot be celebrated later than November 28. This year, households across the country will observe Thanksgiving on the fourth Thursday of November.
Thanksgiving is a harvest festival and, as described by the U.S. government, a day for Americans to “express gratitude for the good things in life.” It falls on the fourth Thursday of November each year, a tradition established by Congress over eighty years ago.
The fourth Thursday can only occur between November 22 and November 28, creating a fixed window for the holiday. Thanksgiving originated from a 1621 harvest feast shared by English colonists and the Wampanoag Native Americans in what is now Massachusetts.
“Express gratitude for the good things in life.” – U.S. government description of Thanksgiving Day
The law now ensures Thanksgiving will never fall later than November 28, preventing celebrations on November 29 or 30.
Summary: Thanksgiving Day in the U.S. is fixed by law to the fourth Thursday in November, always between the 22nd and 28th, ensuring it never occurs on the 29th or 30th.