The story is set during the summer of 1985. Lyle's car radio plays Mr. Mister's "Broken Wings", a song that was released in September 1985 (after the summer) and only became a hit record at the end of 1985.
Stacy Summers asks Rad and Teddy to meet her and her friend at the "Under 21" nightclub called "H2O." H2O is a real underage dance club in Ocean City, but in 1985 it was called "Nite Lite." It didn't change to H20 until the late 90's.