Thanks
"Astronauts Cernan and Schmitt performed the longest single lunar surface excursion at 7 hours, 37 minutes, 22 seconds. They also logged the longest total excursion time on the Moon at 22 hours, 5 minutes, 4 seconds."
But did "surface excursion" time mean total time in a vacuum- meaning did exit and enter a pressurized compartment at beginning and end of that time?