I am now at a point where I have lived more of my life in the 21st century than the 20th.
I knew it had to be close to that point and was thinking I should have a "half life" party to celebrate the occassion, but apparently it was nearly 2 months ago so I missed it.
Very good point. There was no year zero, so the official turn of century (and millenium) is 2001. This means I have nearly 2 more years and can have my "half life" party after all!