AevoStar

BaZi from the classical almanac

The moment you were born, where had the sky's clock stopped?

A star falls and becomes a ring; the rings turn and become four pillars. With your birth date and time, you get a chart you can trust and a reading you can actually follow — in about 30 seconds.

No sign-up · your birth details are never stored on our servers

What are the Four Pillars?

Eight characters the four hands
were pointing to

The sky's clock has four hands. The year pillar moves one step a year, the month pillar at each solar term, the day pillar each day, the hour pillar every two hours. The eight characters those hands pointed to at your birth — the Heavenly Stems and Earthly Branches — are your Four Pillars.

Where each hand pointed depends on the exact moment a solar term began, how the Zi hour is read, and the longitude of your birthplace. We show you which rules were used, right alongside the result.

  • 甲辰
    Year pillar
    one step a year
  • 戊辰
    Month pillar
    one step each solar term
  • 壬午
    Day pillar
    one step a day
  • 丙午
    Hour pillar
    one step every two hours

Why read it here

Accurate, readable, easy to share

  • Calculation you can check

    Year and month pillars come from the exact moment each of the 24 solar terms begins. How the Zi hour was split, the local solar time adjustment, and any daylight saving are all shown with your result.

  • A reading a beginner can follow

    Plain words first, terms second. You see the short version first, and open Hidden Stems, Relationship Types, the Twelve Life Stages and the Luck Pillars table when you want them.

  • No sign-up, just one link

    Results appear as soon as you enter your details. Nothing about your birth is stored on our servers, and one link sends the reading to a friend.

Turn your clock back and take a look

Solar and lunar dates both work, leap months included. If you don't know your birth time, three of the four pillars still read fine.

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