JACKSONVILLE, Fla. -

As more stores push for Thanksgiving shoppers, Kmart, Wal-Mart and other retailers is stepping up their game for the official kickoff to the holiday shopping season.

Kmart announced earlier in the month it would be open all day Thanksgiving.

The world's largest retailer -- Walmart -- says it will open with its holiday blockbuster deals at 6 p.m. on Thanksgiving at its stores, two hours earlier than last year. It will stagger holiday deals throughout the night and into "Black Friday" -- the day that's traditionally the start of the holiday shopping season.

The company will increase its stock of TVs by 65 percent and double the number of tablets for sale that weekend, while promising sharper discounts. It's also bulking up the list of guaranteed popular items that it will sell in designated sections of its store to 21, from just three last year.

Here's a breakdown of the announced hours of large retailers in northeast Florida:

Kmart: 6 a.m. Thursday - 11 p.m. Friday
Old Navy -- 9 a.m. - 4 p.m. Thursday; 7 p.m. Thursday to 10 p.m. Friday
Toys R Us: 5 p.m. - 9 p.m. Thursday; 5 a.m. - 10 p.m. Friday
Walmart: 6 p.m. Thursday; normal Friday closing hours
Best Buy: 6 p.m. Thursday - 11 p.m. Friday
Target: 8 p.m. Thursday - 11 p.m. Friday
JCPenney and Macy's: 8 p.m. Thursday - 9 p.m. Friday
Khols, Sears and Belk: 8 p.m. Thursday - 10 p.m. Friday