Butch Wilmore, Suni Williams and their two crewmates will depart the International Space Station at 1:05 a.m. ET on Tuesday (March 18), weather permitting.

NASA bumped up the return flight home plans for the SpaceX Crew-9 mission that includes a pair of astronauts who were left behind on the International Space Station by Boeing’s Starliner.

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.