And you were at that game in '81 as well...cool! I was also at the game when the Astros were trying to clinch in '86 and Nolan threw a 2-hitter. We didn't clinch that night because Cincinnati also won. The net day, Mike Scott threw a no-hitter to clinch it.
(And then, things became painful...still kind of an "ouch!" to remember Game 6 of the NLCS...afternoon game that went into the night and I was there...)
I shall blame the keyboard this time.