Burger King, Wendy's and Shake Shack are among the businesses with deals for National Hamburger Day.

Fast-food fans and burger lovers have something to celebrate on May 28, as restaurants across the country offer sizzling deals in honor of National Hamburger Day.

Burger King, Wendy’s, Shake Shack, and other chains are serving up special promotions to mark the occasion, with many extending offers through the end of May and into early June.

Burger King National Burger Day deal

Burger King is rewarding members of its Royal Perks loyalty program with a series of daily deals. On May 28, members can get a free hamburger with any purchase of $1 or more. Customers were offered a buy-one-get-one Whopper deal on May 26 and a free Original Chicken Sandwich with a $1 purchase on May 27. Additiona

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