Discussion on astronomical background of yiyi calenders chronological era by heavenly stems and earthly branches / 中华中医药杂志

ABSTRACT

The traditional Chinese medicine deduces the 'Tianshi'based on the chronological era by heavenly stems and earthly branches,whose mechanism has been an eternal mystery.The references discussed the astronomical background of the chronological record of years by heavenly stems and earthly branches.In this paper,① A new law of the nature and human body is unitied was discovered.The relative position of the diurnal motion of the sun and the motion of five yao observed from the earth repeated with a precise period of 60 years,(1years,=360days).It lead the discussion of astronomical background for the chronological record of days and shichen by heavenly stems and earthly branches.② The yiyi calendar's chronological record of months by heavenly stems and earthly branches had the same astronomical background as the chronological record of years,i.e.the relative positions of yearly motion of the sun,the synodic month and the motion of five yao observed from the earth had an approximate cycle time of 60 years.③ The paper further discovered that the relative positions of the diurnal and yearly motion of the sun,the synodic month and the motion of five yao observed from the earth repeated every 240 years.This indicated the astronomical background for the fact that the yiyi calendar's sizhu heavenly stems and earthly branches group had a cycle time of 240 years.④ The traditional Chinese medicine should use the yiyi calendar's local time.