置大寒交司五十九日，加司天化数、支数、干迁数，三数化数，太阴湿土五支数，丑五干迁
数，自寄干迁，至交，计几位。癸寄丑，更不迁动，只得一位。一数三位，并得一十一，并交司
五十九，计得七十，进二位，作七千。《天元玉册》云∶阳年减四十九，阴年加四十五。今癸丑
年，阴年，加四十五，计得七千四十五。以四十五除之，外有五，命元首宫。除之五，天禽宫，
为元首宫先除五。运气不入中宫，不叠六，只在四宫，今癸丑年司天，在四宫，天辅宫也。
申子辰三年，乃一六天，自寅初水下一刻交（大寒寅初一刻交初之气）。司天之气。巳酉丑三年，
乃二六天，自巳初一刻交。自寅至巳，计二十六刻，交司天初气。寅午戌三年乃三六天，自申初
一刻交。寅至申，五十一刻，交司天初气。亥卯未三年，乃四六天，自亥初一刻交。寅至亥，七
十五刻，交司天初气。
每一昼夜，计一百刻，每时共八刻二十分，六十分，又为一刻也。假令癸丑年二六天，巳初
一刻交。自巳初一刻，寅初漏水下一刻，寅上八刻二十分，卯上八刻二十分，辰上八刻二十分，
三八二十四刻，寅卯辰各二十分，计二十六刻，交得太阴湿土司天。厥阴风木之分二十六刻，已
前属上年太阳终之气二十六刻，已后属今年厥阴风木。
将大寒交司（节气交接）后的五十九天，加上司天化数、地支数和天干迁移数，这三个数值相加。太阴湿土对应的地支数为五，天干迁移数方面，癸干寄居于丑位，不再发生迁移变动，因此只计为一位。一数与三位相加，共得十一，再加上交司的五十九天，总计为七十。将此数进位两位，视为七千。《天元玉册》记载：阳年减去四十九，阴年加上四十五。如今是癸丑年，属于阴年，所以加上四十五，总计得到七千零四十五。用四十五去除这个数，余数为五，以此命定元首宫。再除以五，对应天禽宫，这是因为元首宫先减去了五。运气不进入中宫，不叠加六气，只在四个宫中运行。如今癸丑年的司天之气在第四宫，即天辅宫。
申子辰三年，属于一六天，从寅时初刻开始交接（大寒节气在寅时初刻交接初之气）。这是司天之气的交接时间。巳酉丑三年，属于二六天，从巳时初一刻开始交接。从寅时到巳时，共计二十六刻，此时交接司天初气。寅午戌三年，属于三六天，从申时初一刻开始交接。从寅时到申时，共计五十一刻，此时交接司天初气。亥卯未三年，属于四六天，从亥时初一刻开始交接。从寅时到亥时，共计七十五刻，此时交接司天初气。
每一昼夜计算为一百刻，每个时辰共有八刻二十分，六十分钟又相当于一刻。假设癸丑年是二六天，从巳时初一刻开始交接。从巳时初一刻推算，回到寅时初刻漏水下一刻，寅时有八刻二十分，卯时有八刻二十分，辰时有八刻二十分，三个时辰合计二十四刻，加上寅、卯、辰各有的二十分，共计二十六刻，此时交接得太阴湿土司天之气。厥阴风木的时段占二十六刻，在此之前属于上年太阳终之气的二十六刻，在此之后属于今年厥阴风木的时段。
Add the fifty-nine days after the Jiaosi (the moment of solar term transition) to the Si Tian Hua Shu (number of transformation of the ruling Qi), the Zhi Shu (Earthly Branch number), and the Gan Qian Shu (Heavenly Stem migration number). The sum of these three numbers is calculated. For Taiyin Shitu (Taiyin Damp Earth), the Zhi Shu is five. Regarding the Gan Qian Shu, the Gui stem resides in the Chou position and does not migrate further, thus counting as only one position. Adding one number to three positions yields eleven. Adding this to the fifty-nine days of Jiaosi results in a total of seventy. Advancing two places converts this into seven thousand. The *Tianyuan Yuce* states: for Yang years, subtract forty-nine; for Yin years, add forty-five. Since the year of Gui Chou is a Yin year, we add forty-five, resulting in a total of seven thousand and forty-five. Dividing this by forty-five leaves a remainder of five, which determines the Yuanshou Gong (Head Palace). Dividing by five again corresponds to the Tianqin Gong (Heavenly Bird Palace), because the Yuanshou Gong first subtracted five. The Yunqi (Luck and Qi) does not enter the Zhonggong (Central Palace) nor stack six, but operates within four palaces. In the year of Gui Chou, the Si Tian (Ruling Qi) is located in the fourth palace, which is the Tianfu Gong (Heavenly Assistant Palace).
In the years of Shen, Zi, and Chen, it is a Yi-Liu Tian (One-Six Heaven), transitioning at the beginning of the Yin hour (Da Han solar term transitions at the first minute of the Yin hour, marking the start of the First Qi). This refers to the transition of the Si Tian Qi (Ruling Qi). In the years of Si, You, and Chou, it is an Er-Liu Tian (Two-Six Heaven), transitioning at the first minute of the Si hour. From the Yin hour to the Si hour, there are twenty-six ke (quarter-hours), marking the transition of the First Qi of the Si Tian. In the years of Yin, Wu, and Xu, it is a San-Liu Tian (Three-Six Heaven), transitioning at the first minute of the Shen hour. From the Yin hour to the Shen hour, there are fifty-one ke, marking the transition of the First Qi of the Si Tian. In the years of Hai, Mao, and Wei, it is a Si-Liu Tian (Four-Six Heaven), transitioning at the first minute of the Hai hour. From the Yin hour to the Hai hour, there are seventy-five ke, marking the transition of the First Qi of the Si Tian.
A full day and night is calculated as one hundred ke. Each shi (two-hour period) consists of eight ke and twenty fen (minutes), where sixty fen equals one ke. For example, in the year of Gui Chou, which is an Er-Liu Tian, the transition occurs at the first minute of the Si hour. Calculating backward from the first minute of the Si hour to the first minute of the Yin hour (water clock time): the Yin hour has eight ke and twenty fen, the Mao hour has eight ke and twenty fen, and the Chen hour has eight ke and twenty fen. These three hours total twenty-four ke. Adding the twenty fen from each of the Yin, Mao, and Chen hours totals twenty-six ke. At this point, the Taiyin Shitu (Taiyin Damp Earth) Si Tian Qi is received. The segment of Jueyin Fengmu (Jueyin Wind Wood) occupies twenty-six ke. Prior to this, it belongs to the last twenty-six ke of the previous year's Taiyang (Taiyang Solar Qi); thereafter, it belongs to this year's Jueyin Fengmu.