National Pizza Day is celebrated annually on February 9th in the United States. This unofficial holiday encourages pizza lovers to enjoy their favorite slices, whether it's a classic cheese, pepperoni, or a unique topping combination. Many pizzerias and restaurants offer special deals and discounts to mark the occasion. The origins of National Pizza Day are unclear, but it has gained popularity over the years as a fun way to celebrate this beloved food. Pizza, which originated in Italy, has become a staple in many cultures around the world, making this day a perfect opportunity for people to come together and enjoy a meal.