I think FAR 117 requires at least 30 hours of rest to reset you. So if you get back early on Saturday and have 30 off before the DH on Sunday I believe that makes it legal.

PBS once gave me 12 in a row. Flying a red eye getting back to base super early then an evening depart the next day makes it legal. Slap on the pp like that teaches you to stop messin' with them waive commands.