TIL In Korea babies are classed as 1 year old at birth (they'll be changing to 0 this week to align with international standards)

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South Koreans are set to become younger, thanks to new law

https://www.independent.co.uk/asia/east-asia/south-korea-new-age-system-2023-b2364809.html

South Korea adopts new law to join the international standard of age counting