Wikipedia
Denny's (also known as Denny's Diner on some of the locations' signage) is a full-service pancake house/ coffee shop/ fast casual family restaurant chain. It operates over 1,600 restaurants in the United States (including Puerto Rico and Guam), Canada, Dominican Republic, El Salvador, Curaçao, Costa Rica, Venezuela, Honduras, Japan (transliterated as デニーズ ), Mexico, New Zealand, Qatar, and the United Arab Emirates.
Denny's is known for always being open, serving breakfast, lunch, dinner, and dessert around the clock. Unlike many other restaurant chains, Denny's does not close on holidays and nights, except where required by law. Many of their restaurants are located in proximity to freeway exits, bars, and in service areas. Denny's started franchising in 1963, and most Denny's restaurants are now franchisee-owned.