I'm currently going through the junior year of my high school, that was 20 years ago exactly. It has been 22 years since my favorite baseball team, the Boston Red Sox, had finally broken their Curse of the Bambino in 2004. The Harry Potter main book series ended 19 years ago while the film series ended 15 years ago.
The Beloit/Mindset list that comes out every year. It takes the form of "This year's college freshman have always/never ______". For instance, they've always had GPS in their pocket. They've never used a desktop computer. $Celebrity has always been dead. It's always been a post-9/11 world.