National Pretzel Day 2021: Get Free Pretzels From These Restaurants National Pretzel day is celebrated on April 26 Photo: pixabay KEY POINTS Frozen pretzels are at 30% off at GoPuff for National Pretzel Day National Pretzel Day is celebrated on April 26 National Pretzel Day, celebrated every 26th of April, is a good time to snag good deals from different food establishments. The baked goods are known to have been around as early as the 7th century. According to National Today, pretzels have Christian roots. Monks began serving the baked goods to their students in the shape of crossed arms, as it was believed to be the traditional posture for prayer. A few centuries later, pretzels are being enjoyed by the rest of society.