In honor of National Pi Day (March 14), Burger King is celebrating the beloved mathematical holiday with the real thing for a delicious deal. Members of the brand’s free loyalty program, Royal Perks, can enjoy a free Hersey’s Sundae Pie with any purchase of $3.14+ or more only on Pi Day (3.14) – while supplies last.

But, the sweet deals don’t stop there! BK is helping Guests rule breakfast and keep their week on track following the dreaded loss of an hour due to Daylight Savings with Perks Week: Seven Days of Breakfast Deals. From March 10-16, Royal Perks members can enjoy the following daily deals on their favorite Burger King breakfast offerings:

• Sunday (3/10) – Enjoy a free fan-favorite Croissan’wich with a purchase of $1+.
• Monday (3/11) – Toasty breakfast. Tasty savings. Waking up to Free 5 pc. French Toast Sticks with a $1+ purchase will definitely sweeten up your Monday morning.
• Tuesday (3/12) – Squeeze this deal into your morning. Enjoy a free bottle of Simply OJ with a $1+ purchase. 
• Wednesday (3/13) – The perfect accompaniment to any breakfast, get an order of large Hash Browns that are free with a $1+ purchase. 
• Thursday (3/14) – Pie for breakfast? To celebrate Pi Day, enjoy a free Hershey’s Sundae Pie with a $3.14+ purchase all day long.
• Friday (3/15) – Recharge anytime with this all-day deal. Enjoy a morning boost or a mid-day pick-me-up with a free large Vanilla Iced Coffee with a $1+ purchase.
• Saturday (3/16) – Celebrate the last day of  Perks Week with a free Sausage Biscuit with a $1+ purchase and add more sizzle to your Saturday.