Your favorite books, movies, television shows and video games tend to state, specifically, what year they happen. Sometimes it's a very specific year, a vague decade/century (199X, 24th-and-one-half century), or a completely made up timeline (Universal Century, Second Age). Want to quickly see when your favorite work happened? Do you want to know what was happening in fiction while Rapture was explored? Want to know how many works set in World War Two feature the Third Reich dying in any way other than suicide? Just look it up here.