When does each country march during the Olympics Opening Ceremony?

The Paris Olympics Opening Ceremony is expected to be a one-of-a-kind spectacle with thousands of athletes parading on more than 90 boats on the Seine River. The open-air ceremony, something that’s never been done before during modern Games, will transform the city and its landmarks into a giant stage. While specifics about the ceremony are a closely guarded secret, we do know it’ll feature the traditional Parade of Nations with athletes highlighted from more than 200 countries.