The day pillar for Tuesday, 9 March 2027

Day pillar	丁亥 (ding hai)
Heavenly stem	丁 (ding)
Earthly branch	亥 (hai)
Day element	Fire 火 (huo)
Polarity	Yin
Month pillar	癸卯 (gui mao), governed by 惊蛰 (jingzhe)

Today's day pillar is 丁亥 (ding hai), a yin Fire day in the sixty-day cycle. The month pillar is 癸卯 (gui mao), governed by the term 惊蛰 (jingzhe).

亥 (hai), the twelfth earthly branch

亥 is the pig branch, the start of winter and the last hours before the day rolls over.

亥 closes the twelve. It is Water, yin by position, pig by animal. Its hours are 21:00 to 23:00, ending exactly where the 子 (zi) hour begins, and its month starts at 立冬 (lidong) in early November.

Its hidden stems are 壬 (ren, yang Water) and 甲 (jia, yang Wood), which is winter already carrying next spring's wood. That is the sexagenary system's habit in miniature: every ending has the next beginning stored inside it.

Because 癸 (gui) is the last stem and 亥 the last branch, 癸亥 (gui hai) is day sixty of the cycle. When the daily page shows it, the count restarts at 甲子 (jia zi) the following day.