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WASHINGTON (USA TODAY/WUSA9) -- Flip for flapjacks today!

Why? Because it's IHOP's annual National Pancake Day and they're free.

In return for a free short stack of buttermilk pancakes, guests are asked to consider leaving a donation for Children's Miracle Network Hospitals or other designated local charities.

National Pancake Day has raised nearly $13 million to support charities, since 2006.

Participating D.C. area IHOP restaurants have partnered with The Leukemia & Lymphoma Society, giving away free pancakes with the hopes that patrons will make a donation to LLS in lieu of payment.

This year, stores are raising funds in honor of Asad, a six-year-old leukemia survivor and National Pancake Day Honored Hero.

Asad was diagnosed in June of 2012 with acute lymphoblastic leukemia (ALL) at the age of four.

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