Rewrite Fate — Saju Calculator

Four Pillars (사주/八字) chart. Calculation only — no interpretation. Everything runs in your browser; nothing is sent to a server or stored.

Birth date & time

Year

Month

Day

Hour (0–23)

Minute

Birth time unknown (hour pillar will be omitted)

Birth place Quick select (or enter coordinates below)

Longitude (° East +, West −)

UTC offset (minutes)

Born in Korea (use verified KST/DST history — offset auto-determined)

Gender (for luck-cycle direction)

Male Female

Advanced calculation options

True solar time (longitude correction)

Equation of time

Zi-hour (子時) rule

Calculations are performed in your browser. No birth data is sent or stored.
Rewrite Fate is a deterministic calculator. It does not provide fortune-telling, personality, or predictive interpretation.

Lunar calendar input not supported.
Interpretation not included (calculator only).

Rewrite Fate — Saju Calculator

Four Pillars

Hidden stems (지장간)

Luck cycles (대운)

Solar term (절기)