Denny's offers its full breakfast, lunch, dinner, and dessert menu around the clock at all locations. Since the 1950s, Dennys has served breakfast 24/7, including weekends and holidays. Denny's Meals If you want breakfast for supper, go to Denny's. This diner-style eatery acquired a reputation for its pancakes and omelets but now serves finger-licking delicious burgers and sandwiches all…