Dairy Queen (DQ) is an American multinational chain of soft serve ice cream and fast-food restaurants owned by International Dairy Queen, Inc., a subsidiary of Berkshire Hathaway. International Dairy Queen, Inc., also owns Orange Julius, and formerly owned Karmelkorn and Golden Skillet Fried Chicken.

The first DQ restaurant was located in Joliet, Illinois. It was operated by Sherb Noble and opened for business on June 22, 1940. It served a variety of frozen products, such as soft serve ice cream. 

The company's corporate offices are located in the Minneapolis suburb of Edina, Minnesota. 

The company's stores are operated under several brands, all bearing the distinctive Dairy Queen logo and carrying the company's signature soft-serve ice cream along with the trademark restaurants were "Brazier" locations with a second floor for storage, recognizable for their red mansard roofs.

As of the end of 2014, Dairy Queen had more than 6,400 stores in 27 countries, including more than 1,400 locations outside the United States and Canada. 

The largest Dairy Queen in the United States is located in Bloomington, Illinois. The largest store in the world was built in Riyadh, Saudi Arabia. The busiest store in the world is located in Charlottetown, Prince Edward Island, Canada.

Other event:

Celebrating 43 years of Professional Football Researchers Association (June 22, 1979 - Jun 22, 2022)

According to en.wikipedia