A burger chain turns a one-day holiday into a week-long celebration.

September 18th is National Cheeseburger Day, when people all over the world enjoy a melt-in-the-mouth piece of beef.

Burger King is offering members of its Royal Perks loyalty program a free cheeseburger to celebrate the day. While the offer is valid on the holiday itself, the chain is also offering other tasty freebies for an entire week, all valid with a purchase of $1 or more:

• 16 September: Customers can get a free Whopper Jr.
• 17 September: Poultry fans get a free Original Chicken Sandwich
• 18 September: On National Cheeseburger Day, burger lovers can get a free flame-grilled cheeseburger
• 19 September: Customers can receive four free mozzarella fries
• 20 September: Early risers get a free Croissan’wich
• 21 September: Customers can enjoy four free chicken fries
• 22 September: Quench your thirst for free gifts with a free soft drink (any size)

Additionally, Burger King is celebrating National Coffee Day on September 29 by offering Royal Perks members a hot coffee (any size) for $1 all day long.

Burger King is obviously a fan of giving away free Whoppers and other great deals: they gave away the goods for the chain’s 70th anniversary in May and for the solar eclipse in April.

In a fourth-quarter conference call on August 8, the chain’s executives announced that its $5 “Your Way Meal” offer had been so profitable that it had decided to extend the offer through October.

But BK is not the only chain that has a tempting offer on National Cheeseburger Day: Competitor Wendy’s is also selling Jr. Bacon Cheeseburgers for 1 cent (with an extra purchase) from September 18 to 22.

Meanwhile, McDonald’s is selling its double cheeseburger for 50 cents during the holidays to customers who place an order through the app – no purchase necessary.

Check out all the National Cheeseburger Day deals here.