The folks who declare food holidays have designated May as National Hamburger Month and May 28 as both National Hamburger Day and International Burger Day.
That gives restaurants several excuses to do promotions.
Here are chains that have announced current burger deals.
Del Taco: The chain is running a buy-one-get-one-free deal on Double Del Cheeseburgers for members of its Del Yeah! Rewards program on Saturday and Sunday, May 27-28, according to a news release. deltaco.com
Eureka! Restaurant Group: Loyalty members who dine at a Eureka! location through May 28 will become eligible to win a Burger Pass, good for a year of weekly cheeseburgers. Loyalty members who dine on Sunday will get double points, according to a news release. eurekarestaurantgroup.com
Farmer Boys: The Riverside-based fast casual chain will be selling its Big Cheese for $3 after 2 p.m. on May 28, according to a news release. farmerboys.com
Red Robin: Red Robin Royalty members can buy one burger or entree and get 50% off a second throughout May. https://www.redrobin.com/national-burger-month
Rock & Brews: The chain will be offering a new appetizer called Cheeseburger Rolls for $5.28 on May 28. rockandbrews.com
The Habit Burger Grill: The Irvine-based chain is offering two Charburgers with cheese, two orders of fries and two drinks for $20, plus tax. The deal will run through June 27, according to a news release. habitburger.com
Wendy’s: This chain has several May deals for its app users, according to a news release posted on qsrmagazine.com, including a Junior Bacon Cheeseburger for 1 cent with any purchase May 26-June 1. App users can also buy one premium hamburger and get one for $1 all month.