Test Your Regional Hot Dog IQ! Dave Odegard September 9, 2016 Food & Drink Today, September 9, is National Hot Dog Day. And even if you didn’t know that, you may still be a hot dog genius. There are literally countless ways to serve the quintessential American treat. We’ve compiled just 11 ways that hot dogs are made around the country, see if you can match each dog with the city or state it calls home.