This is because South Korea had 3 different ageing systems before now
- 1. South Korean Age - You are 1 when you are born and you get a year older each year on Jan 1st
- 2. Korean Age - you take the current year and minus the year you were born and that is your age
- 3. International Age - the age the rest of the world uses
https://www.theguardian.com/world/2023/ ... nting-ages


