We Aren't a Quarter of a Century into the 21st Century

Happy New Year!

This year a lot of people are going to start saying we're a quarter of a century into the 21st century.

That's not correct. We won't be a quarter of a century into this century until 2026.

Why?

Because there was no year zero. We went from 1 BC (BCE) to 1 AD (CE).

So the first century was 1 to 101.

The second century was 101 to 201.

The third century was 201 to 301.

And so on until the 21st century will be 2001 to 2101.

So 25 years into the 21st century will be 2026.

I know it's not fun. But it's the truth. But man, a quarter of a century next year already. That amazes me.