The show will return to February in 2019 - to be held on February 24.
In 2020, the ceremony is set for February 23. It will take place on February 28 the following year.
The date for the 90th Oscars, which had already been announced, is moving into March as not to compete with the Winter Olympics.
The closing ceremony of the Games in Pyeongchang, South Korea, will be held on February 25.