Ages · 데뷔 당시 나이는? — 달력을 섞지 않고 읽기

How old on debut? — reading debut age without mixing calendars데뷔 당시 나이는? — 달력을 섞지 않고 읽기

“How old were they when they debuted?” needs two dates: birth date and debut date (usually the official debut single/showcase day the agency names).

1. Take the full birth date from a verified profile.
2. Take the debut date from the agency / official chronology — not a viral “trainee reveal” year.
3. Compute international age on that debut day (completed years).
4. If you only have birth year, say “born in YYYY” instead of asserting an exact debut age.

How to read ages · Korean vs intl · Debut anniversaries.