Taking the bus back to college avenue in the evening

On weeknights, after 9:30, I believe, the A bus becomes the only bus running from College Avenue to Busch Campus. It takes the H bus route, however. Good to know, right? Why am I writing about this? I missed the A going back to College Ave by waiting on the wrong side of Werblin and had to take the A as it entered the Busch Campus.