Top 10 Stories Of 2019, Part I

[Speed on the Water]

A year of triumph and tragedy ends one decade as we enter the next, https://speedonthewater.com/in-the-news/commentary/6592-top-10-stories-of-2019-part-ii.

[fund razor]

It's the Millennium all over again. (Which began 1/1/01)

You are not "1" at birth.
A set of ten ends with (wait for it) ten. It does not begin with zero. There is no zero in date keeping unless is appears as a 10, 100 or 1000. It never appears as "0."

The decade ends in one more year. The new decade begins on 1/1/21. 2020 is the "ten" in this story. It completes the final year of the prior set of ten.