Walmart's Black Friday will start at 6 pm on Thanksgiving

Black Friday is also on the minds of the marketers at Amazon, Kohl's, Target, Best Buy, JC Penney, Costco, Macy's, Sam's Club, Sears and Kmart.

Hours: JC Penny has not yet announced its store hours, but deals will last November 23-Dec. 24. Black Friday hours will vary by location. This year, the deals become available at 6 p.m., the kickoff time Walmart used last year. Its stores will stay open until 10 p.m. the following day. Walmart is adding a color-coded map of store departments on its circulars in hopes of making it easier for customers to find items. Some stores will close at midnight or 2 a.m. on Friday and reopen at 6 a.m.

Office Depot and OfficeMax stores won't be open on Thanksgiving. There's one big benefit to Best Buy's offerings, though: According to its Black Friday ad, many of these deals will be available both in stores and online on Thanksgiving day.

Here is your guide to Walmart Black Friday 2017 deals, plans and other details that can make or break your Thanksgiving Day and Black Friday shopping trips.

Walmart, the nation's largest retailer, is tweaking its Thanksgiving and Black Friday traditions this year with more doorbuster-style deals, also offered in advance online. Blu-ray movies start at $3.99 on Black Friday.

See all of Walmart's Black Friday deals here.