NASA astronauts Sunita Williams and Butch Wilmore are returning to Earth on March 18, after over nine months on the ISS. They’ll splash down off Florida at 5:57 pm (21:57 GMT), marking the end of their extended mission.

NASA removed two astronauts from its Crew-9 mission to allow for Williams and Wilmore to join the cohort, and return onboard the SpaceX Dragon − which carries four people at a time. The altered Crew-9 − only Hague and Gorbunov − launched aboard the SpaceX Dragon Freedom in late September.

Two Nasa astronauts who have been left stranded in space for nine months will finally return to Earth later this week. Butch Wilmore and Suni Williams are scheduled to begin their journey home early Tuesday morning.