May 28 is National Hamburger Day. If you like hamburgers, here are a few deals to check out.

Arby’s: Through June 2, Arby’s Rewards members can get 50% off any burger when they order online or in the app.

Burger King: Members of Burger King’s Royal Perks loyalty program can get a free hamburger on May 28 if they spend 70 cents at the restaurant. The chain will repeat the same deal on Friday for cheeseburgers.

Outback Steakhouse: Outback is offering customers $10 burgers through May 28.

Wendy’s: Starting May 28 and continuing through June 2, customers can get a Jr. Bacon Cheeseburger for 1 cent with any purchase if they order in the Wendy’s app or at wendys.com.