Walmart has announced a major change to its Thanksgiving sales events.

Black Friday deals at America’s largest brick-and-mortar retailer will run November 12-15 and November 23-29. Cyber Monday sales will take place November 30- December 2, the company announced this week. That’s four days longer than last year , in total.

"It's all about helping our customers save more, discover more and make more room for what matters,” Walmart U.S. Chief Merchandising Officer Julie Barber said.

The first day of the sales events will begin online at 12:01 a.m. EST and in stores at 6 a.m. local time.

Walmart’s Black Friday and Cyber Monday sales are part of a holiday shopping season that experts say will break records for online and overall sales numbers.

Walmart stores will open at 6 a.m. local time during the company’s Black Friday and Cyber Monday sales (Getty Images)

U.S.…