I don’t know what type of calendar he uses but every year Park Myung Soo has a different date of birth ㅋㅋㅋ.
It is because of lunar calendar, i think some koreans celebrate their birthday according to this calendar.
His birthday will be on 9th October.
Happy Birthday 27th August ㅋㅋㅋ ! Happy Birthday 9th October ㅋㅋㅋ !