Question: what years are exactly the same?
Answer: According to TimeandDate.com, 2020 has the exact same calendar as the years 1992, 1964, 1936, and 1908, so if you have a cool vintage calendar from one of those years you can go ahead and use it again! Have you already picked up a new calendar for 2020? Well, if you're willing to wait, you can use it again in 2048!