Educational institutions throughout Thailand celebrate an ancient custom"Wai kru",the ceremony of paying respect to teachers in June or July, soon after the beginning of the new academic year.
Schools, colleges and universities all over the country observe Wai kru to show respect to teachers. Wai kru is held on a Thursday because Thursday's star is the planet Jupiter. astrologers believe that Jupiter is the "teacher star" since it confers knowledge concentration and wisdom.