South Koreans become one year younger under new age-counting law (bbc.com)

French politicians: "Write that down! Write that down!"

> Previously, the most widely used calculation method in Korea was the centuries-old "Korean age" system, in which a person turns one at birth and gains a year on 1 January. This means a baby born on 31 December will be two years old the next day.

Bizarre. How has that not been an issue until now?

In Korea, most official processing has been following the international standard for a long time now, and this change just changes the age that Koreans informally and customarily count. I honestly don't understand what this policy means or why they're even doing this.