If you’re looking for something to celebrate in May, look no further than the humble hamburger. May is National Beef Month and National Hamburger Month. You can plan seven days of diner visits during National Hamburger Week, the second week of May. Or, fire up the grill on May 28, National Hamburger Day. Not enough for you? Don’t worry: Americans love burgers so much that July 28 and December 21 have also been designated Hamburger Days. If you like cheese, make note that September 15 is National Double Cheeseburger Day and September 18 is plain old National Cheeseburger day. Whew—that’s a lot of beef!