It was on every week, two nights in a row. Oh, how I LOVED that show! It’s cringe worthy now, but it was sure fun when I was 12!
Actually, I like the show a lot more now than I did when I was a kid - back then, I didn't appreciate just how intentionally cony and campy it really is. Every big name Hollywood star back then wanted to appear on the show. They couldn't accomodate them all as as villians, so they started doing the cameos with celebrities popping out of windows as Batman and Robin were climbing up the side of a building.
(The "Memorable Entertainment Television" network - known as "ME TV" - airs the program on Saturday nights.)