BaZi Guide
True Solar Time in BaZi: Why the Birth Hour Needs Correcting
True solar time corrects clock time to the sun's position over your birthplace, a small adjustment that can move the hour pillar and change the whole chart.
DEFINITION
What is true solar time? It is local sun time: clock time adjusted for your longitude within the time zone, plus any daylight saving in force on that date.
Clock time is political
Time zones flatten longitude; the sun does not.
Corrections can be large
At a zone's western edge, the gap can approach an hour.
The hour pillar is at stake
A shifted hour changes the fourth pillar and much of what follows.
Frequently asked
How big is the correction?
It depends on longitude and daylight saving, not on the clock alone.
Does it always change the chart?
No, only when the correction crosses an hour boundary.
Do I need the exact minute?
Minutes help, but the hour is the critical unit.
Is this astronomy?
It is a standard solar correction, applied within a traditional system.
YiMingShu presents Eastern destiny systems as a cultural and reflective tool, not as science, medicine, law, or financial advice. Charts are for self-reflection and tradition, not for making medical, legal, or investment decisions.