I know what I was doing 13 years ago today, or at least I remember some of the more important events of the day. I'm not sure what happened in between then and now or how I've changed over the years - I'm too close to see. It's impossible to see where another 13 years will land me. October 21st 1996 was a day that changed everything and it changed it for at least 13 years, as the years rolled by the meaning of the day altered - coloured by the events which followed.
Back when it was relevant it was a date I often forgot, but I don't think I ever forgot it's importance for me.