23 September 1989 when we lost 5-1!
Ville Romppainen, Finland: It has to be when Owen scored the 96th-minute winner and I was sitting in the Stretford End. That 4-3 game was such a rollercoaster of emotions.
Rok Saje, Slovenia: For me, it’s Rooney’s bicycle kick... and I was there to see it.
Kyle Diller, USA: RvP's Etihad winner. I think everyone wanted revenge for last season's heartbreak and we got it. When his goal went in, I was just lost in so much raw emotion. In that moment, so many of our derby demons were exorcised. That feeling was one of the best I've had in over a decade of supporting the club.
Where and with whom will you be watching Monday's match?
Ethel Sleith, South Africa: We’ll be at the Keg and Beagle in Linksfield, Johannesburg. Kick-off’s at 9pm for us but hopefully we’ll have a lot of branch members there.
Hisham Alkooheji, Bahrain: I will be at Elite Seef Residence & Hotel in Bahrain, where we watch all the games with our supporters club members and other United fans in Bahrain. Kick-off is at 10pm so we’ll be exhausted at work the next day but it's worth it.
Ali Kassem, Lebanon: I'll be watching the game at our local pub in Beirut with around 300 other Lebanese Reds!
Richard Palmer, USA: I will be watching the match live at Old Trafford. I wouldn't miss it for the world.
Mikhail Starov, Moscow: We’ll watch it in our local pub. Kick-off will be at 11pm for us and although the match will finish long after the metro closes, we can’t miss the derby!
Rok Saje, Slovenia: I’ll be at OT but most of our club members will get together in our pub in Ljubljana. Kick-off for them will be at 9pm.
Omar Altaf, Kuwait: Our supporters’ club has arranged a fans’ party at Applebee’s (Gulf Street) Kuwait, our home for watching all the United games. Kick-off will be at 10pm.