The date was finalised after NASA finished the detailed fueling test and launch-day walkthrough on Thursday. The Space Launch System rocket has been filled with more than 700,000 gallons of cryogenic propellant for a successful liftoff. The first rehearsal in early February was cut short due to a hydrogen fuel leak at the launch pad. Lori Glaze, acting associate administrator of NASA’s Exploration Systems Development Mission Directorate, said the problems, including issues with seals and filters, have since been resolved.
Article source: https://www.express.co.uk/news/science/2173648/astemis-2-update-nasa-sets-launch-date