The IOC also said two athletes, one from each of the Koreas, will be the flag-bearers. One will be male and one will be female, though it isn't yet clear which Korea will be represented by which gender.

Both Koreas will have their largest Winter Olympics delegations ever: the South with 219 athletes and officials and the North with 46 athletes and officials.

Lee Hee-beom, president of PyeongChang's organizing committee, said he's looking forward to a large ceremony for both.

"I think almost all of the North Korean representatives will be there," Lee told Yonhap News Agency during Wednesday's opening ceremony for the Main Press Centre in PyeongChang.

"As for the South Korean delegation, about 70 percent of the team will be there, mostly athletes who don't have to compete the following day," Lee added.

This will be the 10th joint march for the Koreas at an international sporting event. At the 2002 Asian Games in Busan, some 450 kilometers southeast of Seoul, 300 athletes and officials from each of the Koreas, 600 total, marched in together.

The order in which the participating nations enter the opening ceremony is determined by the alphabet of the host nation. The host country is always the last to march in.

PyeongChang 2018 will be the largest Winter Games in history with 92 nations sending about 2,900 athletes. (Yonhap)