In korea, 60th birthday is called ‘HwanGap’. HwanGap’s meaning is that their’s the zodiacal sign return first starting. long time ago when people didn’t have good medical skill, Many people was not east over 60years old, SO at the 60th birthday, their’s family held on big festival. and they pray about theirs parent can arrive long time. but theseday People can arrive longtime. so Hangap will miss meaning bit by bit