Based on the traditional Chinese Lunar calendar and following a 60-, 10- or 1-day cycle you determine open acupuncture points at a particular time.
Use the traditional Chinese lunar calendar to calculate a constellation of heavenly stems and earthly branches on a particular day and time.
An additional calculation establishes a correlation between "birth hexagram" and related potent acupuncture points. The I Ching texts provide further insight into the calculated hexagrams.
As an extra you may use the I Ching oracle if you seek advice.