Thanksgiving Sunday is not a widely recognized holiday, so most stores and businesses operate as usual on that day. However, if you meant Thanksgiving Day, which is the fourth Thursday in November, then it depends on the store or business. Some stores and businesses are closed on Thanksgiving Day, while others remain open. For example, Target, Walmart, Best Buy, and Kohls are closed on Thanksgiving Day. On the other hand, some grocery stores, such as Whole Foods and Trader Joes, are closed on Thanksgiving Day. Its best to check with the specific store or business you plan to visit to confirm their hours of operation on Thanksgiving Day.