The watch was used to time the duration of the Descent Orbit Insertion maneuver and to time the rendezvous maneuvers after launch from the lunar surface.

FORBES: Apollo 15 Bulova Moon Watch Up for Auction at Bonhams

This year the students had to program their SPHERES to deploy dust clouds that could remove space junk from orbit, dock with another satellite to harvest its parts, and maneuver through an unknown field full of debris.

MSN: High schoolers control satellites aboard space station