We've selected 20 classic Irish sports photographs from the archives of Sportsfile and we just want you to tell us what year the photo comes from.
All 20 photos come from the 21st Century, so everyone should have a chance here, and there are ways of figuring it out from jerseys to occasions. Take your time and you could get all 20 right.
We will be very impressed with anyone who can get through without making a mistake. Please let us know how you get on on our social channels.