jeongguk just turned 25, taehyung is still 24, jin is 29 about to hit the big 30, and i haven't specified the others' ages but i in my head namjoon was born in the same year as jin, meaning he's older than him and also about to turn 30. and jimin is 24 just like tae and hobi in my head is 27 or 28 and yoongi is probably like 30 although since knowing taehyung he's aged a good 20 years