About National Deep Dish Pizza Day
To celebrate Chicago deep dish pizza—originated by Uno's—and the efforts by UNO Pizzeria & Grill to bring deep dish pizza to the entire United States. The original restaurant, which opened in 1943, began serving deep dish as a way to make sure hungry families could get a "real meal" when it came to pizza. Up to that point, pizza was hardly more than a snack.
Annually celebrated on the anniversary of the day (Apr 5, 1979) that the first restaurant outside Chicago opened (in Boston, MA).
Similar Observances
National Chocolate Covered Cashews Day
National Chocolate Covered Cashews Day is a wonderful opportunity to indulge in one of the world's most beloved snacks.
Read More
Read More
Other Observances on April 5th 2026
A Drop of Water Is a Grain of Gold
This national holiday in Turkmenistan underlines the value and appreciation of water as a resource.
Read More
Read More