Do I always need true solar time?

Not always, but it can be useful when birth time is close to an hour boundary or when precise chart calculation matters.

What if I do not know my exact birth time?

You can still generate a useful preview, but timing-specific parts of the reading should be treated as less precise.

Learn

True solar time adjusts clock time against location-based solar context. In BaZi, it can matter when a birth time is near an hour boundary.

Birth city helps a calculator understand timezone and location-sensitive timing context. This supports a more careful chart calculation.

True solar time is most important when a recorded birth time is close to the boundary between traditional two-hour periods.

If the time is far from a boundary, the practical impact may be smaller, but location data still improves transparency.

A transparent calculator preserves the timing assumptions used to build the chart.

A careful report does not overstate certainty when birth time, birth city, or timing reference is uncertain.

True solar time affects calculation details, not the entire reading by itself.
The hour pillar should be read alongside the other pillars and structural signals.
A responsible Life Map explains uncertainty instead of hiding it.

Do I always need true solar time?: Not always, but it can be useful when birth time is close to an hour boundary or when precise chart calculation matters.
What if I do not know my exact birth time?: You can still generate a useful preview, but timing-specific parts of the reading should be treated as less precise.