The 24-hour dining options outside the perimeter are extremely limited, but Marietta Diner on Cobb Parkway near the Big Chicken has been the place for 24/7 OTP eating since 1995. The Greek diner includes an impressively large menu to satisfy any craving, and that includes around-the-clock breakfast dishes. Try the grilled cheese, gyros, patty melt, or any of the open-faced sandwiches. There’s also fried chicken and fried catfish.

Many of the restaurants housed at this West End ghost kitchen are open and serving food for takeout and delivery well into the early morning hours, closing briefly when the sun comes up to restock and refresh the menu. This includes Chauncy’s Kitchen serving fish, beef, chicken, and vegetarian fufu tacos, from 6 a.m. to 2 a.m., and soul food restaurant Soulicious, closing at 5 a.m. and reopening at 9 a.m. Check individual restaurants for specific hours.

The Home Park doughnut shop, owned by baker Kamal Grant, is open 24/7 on the edge of the Georgia Tech campus for doughnuts, ice cream, and coffee. Flavors change frequently here, but expect doughnuts like s’mores, Nestle crunch, A-town mocha, salt and vinegar, and red velvet to be on the menu. There’s also a location open 24/7 on Briarcliff Road.

There’s not much more to say about this Atlanta-based restaurant institution. Atlantan’s know where to head for 24/7 smothered, covered, and scattered hash browns, waffles, and plenty of coffee paired with some seriously amazing people watching, especially into the wee hours of the morning. Some locations are no longer open 24 hours. Check individual restaurants for current hours.

The Landmark Diner in Buckhead is “where the stars meet at night”. But, really, it’s where people meet up for late-night bites and coffee, especially following an evening of bar hopping or an event in town. Landmark is fashioned after the traditional northeastern diners with a large menu of breakfast, burgers, fried foods, and sandwiches. There’s also a 24/7 location on Luckie Street in downtown Atlanta.

Located in Forest Park next to a BP gas station, Las Tortas Ahogadas is where to head for tacos, flautas, chilaquiles, and burritos at any time of day. The restaurant currently closes at 4:30 a.m. to restock, before reopening again at 11 a.m.

Mama’s Cocina Latina on Piedmont Road in the Piedmont Heights neighborhood serves a mix of comfort foods and familiar Mexican dishes like tortas, tacos, burritos, and tostadas. Grab late-night hot wings, fajitas for one, two, or three people, or a grande dinner platter with two enchiladas, a taco, rice, and beans. The platter is hovers around $10. For breakfast, try the huevos rancheros or Mama’s breakfast with scrambled eggs, pancakes, and bacon. There’s also a drive-thru window open 24/7.

Who couldn’t use a comforting bowl of hot pho and a pot of tea at 1 a.m.? Pho 24 on Buford Highway is open nearly 24 hours a day for bowls of pho and bánh mì sandwiches. The restaurant closes briefly in the early morning to make more pho broth and restock the menu for the day.

Since 1998, Georgia Diner has been a go-to in Duluth for burgers, pancakes and waffles, club sandwiches, pasta, Greek food, and cakes by the slice at all hours. While the restaurant is no longer open for dining in 24/7, people can still order takeout and delivery from Georgia Diner any time of day or night. The kitchen never closes. Georgia Diner’s dining room and drive-thru window both open for service at 8 a.m. daily and close at 11 p.m.