My granddaughter Maggie recently celebrated her birthday and, as she was born in the year 2000, it got me thinking. 

Inasmuch as the 21st century commenced on January 1, 2001, she, and all others born in the year 2000, are uniquely situated to become Tricentenarians!

When she celebrates her 101st birthday, it will be at the dawn of the 22nd century, in the year 2101!  Quite a unique accomplishment!

Too bad I won't be around to celebrate with her :)