십이직(十二直)의 천문학적(天文學的) 의의(意義)와 역일(曆日)에의 장기적(長期的)인 배당방법(配當方法)에 관(關)하여

ON THE ASTRONOMICAL SIGNIFICANCE OF 12 CHIH AND ITS LONG TERM ASSIGNMENT TO CALENDAR

Twelve Chih was sasigned to each day in the old Chinese calendar. This paper clarifres the relations between 12 Chih and the diurnal motion of Big Dipper or the clock, and it shows the long term table and formula for the dayly assignment of 12 Chih in the calendar.