Time Zones & Business Hours. The United States is a wide country with seven time zones. There are four time zones in the continental United States, each separated by one hour. When it is noon in New York City, is only 11:00 AM in Dallas, 10:00 AM in Denver, and 9:00 AM in San Francisco.
The name Whopper is a registered trademark of Burger King Holdings and is displayed with the circle-R (Â®) symbol in all markets it is sold. The name Whopper Jr. is a registered trademark in the US, Canada and Europe.
Burger King's Whopper, invented in 1957, is a quarter-pound flame-broiled burger plus fixings. McDonald's Big Mac, invented in 1967, is two 1.1-ounce patties separated by a third bun, plus cheese, fixings, and a special sauce that tastes like mayonnaise plus ketchup. The Big Mac also uses dehydrated onions instead of fresh.