I was 12 when I first figured out how old I was going to be on New Years Eve 1999, the night before the year 2000.
I was very disappointed. Clearly I was going to be far too old to really enjoy it. Ah, the brutal honesty of youth! Actually, even though I was quite well into adulthood by the time that date rolled around, with a little toddler and everything, I still had a good time and managed to stay up until midnight. In fact, do you remember Y2K? The computer bug everyone was terrified was going to end society as we knew it, causing all technology to crash, and airplanes to fall out of the sky? I was the wag who switched off the room lights at the crucial moment, causing mild anxiety amongst all the other party goers. I think 12 year old me would have thought that was pretty funny.