I mean it's not like it's official or anything, I was just making an observation. But the reason is because the years in the first century don't have a 1 in front of them. A century ends at 99. The 21st century started in 2000. The 20th century started in 1900. The 1st century started in 001. Maybe the first century is an exception and didn't end until 100, idk. But they would still leave 99 years without a hundreds character.