It also is offering shoppers a sneak preview of the deals it will offer, from laptops to jeans.
As of Oct. 31, Wal-Mart Stores Inc. operated 3,792 Walmart stores, of which 2,882 are supercenters.
The company's super centers are typically open around the clock. But the rest of its stores previously opened at 5 a.m the day after Thanksgiving.
Toys R Us announced last week that it open its stores at 10 p.m. Thanksgiving Day.