Pivot Clock

BaZi in one minute

BaZi (八字, “eight characters”), also called the Four Pillars of Destiny, is a traditional Chinese way of describing a moment in time. Its roots in the Chinese calendar reach back well over a thousand years, and the method practised today took shape gradually over many centuries.

The calendar counts time with two sets of signs: 10 Heavenly Stems (天干) and 12 Earthly Branches (地支). Paired in order they form a cycle of 60 combinations, which is used for years, months, days and two-hour periods alike.

Your birth moment is written as four pillars — year, month, day and hour — each one stem over one branch: four pillars of two characters make the eight characters. The stem of your day pillar is your Day Master. In the tradition it stands for you, and every other character is read in relation to it.

The Five Elements

Every stem and branch belongs to one of five elements, or phases: Wood, Fire, Earth, Metal and Water. They relate in two cycles. Generating: Wood feeds Fire, Fire leaves Earth (ash), Earth bears Metal, Metal carries Water, Water nourishes Wood. Controlling: Wood parts Earth, Earth dams Water, Water quenches Fire, Fire melts Metal, Metal cuts Wood. Seen from your Day Master, these relations give the “Ten Gods”: labels such as Resource, Output or Wealth for each of the other characters.

Months and hours follow the sun

BaZi months are not lunar months. They follow the 24 solar terms (节气), set by the sun’s position along the ecliptic, and the year pillar changes at Lichun (立春, the Beginning of Spring, around 4 February). The hour is traditionally read from the sun too, so this page can use true solar time: your clock time corrected for longitude and for the time of year. Luck pillars (大运) are ten-year phases counted from the month pillar; they describe the slow background rhythm of a life.

The Western natal chart

The natal chart from Western astrology shows where the Sun, Moon and planets stood along the zodiac at your birth, seen from your birthplace, together with the Ascendant and the twelve houses. This page uses the tropical zodiac and Placidus houses.

How the Pivot Clock combines them

BaZi gives the rhythm of time: the current hour and day each have a pillar, and the clock shows how they meet your chart — which element they bring, which Ten God they are to your Day Master, and whether branches combine or clash. Astrology gives the sky: today’s transits, where the planets are now compared with your natal planets. Together they work like a weather report for self-observation, not a forecast of events.

Why “Tianshu”?

Tianshu (天枢, “celestial pivot”) is the traditional Chinese name of Dubhe, the first star of the Big Dipper. A well-known classical saying ties the direction of the Dipper’s handle to the seasons — east in spring, south in summer, west in autumn, north in winter — and the Dipper turning around the pole served as a clock in the sky. The name suits a clock that joins the calendar and the stars.

Glossary

How to use it

Glance at it the way you would at a weather report. Notice the current hour and day, read the suggestions and open “Why” to see the rule behind each one, then compare it with your own experience. If something resonates, take it as a prompt for reflection or practice; if not, let it go. The Pivot Clock does not predict events, and it is not medical, legal, financial or investment advice.