Observed arrival · 2026-09-07
SajuDecoded puts your birthplace back into the birth chart
A browser-based Korean Four Pillars calculator that uses your birth date, local time, city, daylight-saving rules, longitude, and true solar time to produce a free Saju chart.
Field notes
The calculator asks for the place and local circumstances of birth rather than treating a date and time as location-free. Its method applies timezone and daylight-saving rules, then adjusts for longitude and the equation of time; the page gives a July 4, 1990 comparison in Seoul and New York where the displayed Hour pillars differ. Unknown birth hours produce a three-pillar reading instead of an invented value. A longer report is offered separately for $12.99.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue