Not so many years ago a boy and a girl were dating, and had been so for a few years. The girl was still in college and the boy was several years in to working at a medium to low paying job he didn't like. The girl finally told him that if he let her invest his money he could be retired by his 40s. Her father had done it, and if he had, anyone could. The boy wrote her, at the time, a large check and told her to make it happen.
Fast forward most of those not so many years. That couple got married and the boy is now approaching 40. The retirement date has wobbled around quite a bit, but never too far from the mark. In the past few years they have been working diligently to cut the date back, as they are both now ready to be free from their jobs and ready to be on to the next chapter. They are both analytical but also full of whimsy, so picking the date got, interesting.
The actual picking of the date:
Spring time was better for travel, and they wanted to drive Route 66 to commemorate the occasion. So spring it would be.
Thirty nine for him was better than 40 and would allow for the girl to keep her promise made back when they were young and idealistic (not so different from how they are now). So the date was moved forward to accommodate that. Promises are important after all. Even the pedantic ones.
The month, that was a little more difficult, if they went later she could retire at 37, a good solid prime number. A lovely number. Many merits to being prime, especially when being discussed by two analyticals. Or they could go earlier and she could retire at 36. Now that is a lovely number. So many good things about that number, sure it isn't prime, but 6x6 is 36 after all. It also rolls off the tongue. It also sounds so much more impressive. To forever be FIREd at 36, oh yes, that would do. So the date was again moved forward to accommodate this desire.
Then they decided it tickled their fancy to have their first day of FIRE be April Fool's day, so April 1st was chosen for a jolly good chuckle. With the days passing by and the FIRE date jumping forward time was flying by!
The stache hadn't quite hit the number, but was close enough. They could be flexible. The date mattered more than the pile. The boy and the girl left work at the end of March and started down their next adventure on April Fool's day, with crazy grins and wild chuckles.