IZNA members and their ages (I-Land 2 girlgroup)

kind of misleading, just count by year:

20 - Mai

19 - Jeemin, Jiyoon

18 - Koko

17 - Sarang, Jungeun

16 - Saebi

Quote from ychofficial

But this is not how it works in the majority of the world.

Example, Koko wouldn't be allowed to drink alcohol in my country untill her exact 18th birthday in November, untill then she is 17.

I get your point but I think in KPOP it's more about who is what liner