NASA has confirmed the first female astronaut duo will venture outside the International Space Station at the end of March.

NASA told Axios this was not intentional, as astronauts Anne McClain and Christina Koch are among a growing trend of female astronauts and that it was only a matter of time before this would happen. McClain and Koch were part of NASA’s 2013 class, which was the first class comprised of 50 percent women.

“It was not orchestrated to be this way; these spacewalks were originally scheduled to take place in the fall,” NASA spokeswoman Stephanie Schierholz told CNN , “In addition to the two female spacewalkers, the Lead Flight Director is Mary Lawrence, and Jackie Kagey (also a woman), is the lead EVA (spacewalk) flight controller.”

The spacewalk will last about seven hours and will mark another milestone for women in space along with Russian cosmonaut Valentina Tereshkova becoming the  first woman to fly in space  in 1963 and NASA astronaut Sally Ride becoming the  first American woman  in space aboard the Challenger space shuttle in 1983.