01 · Time and place
Historical local time is checked
City, time zone, daylight-saving rules, and unknown birth time are handled before interpretation rather than guessed inside the writing.
Korean Saju · BaZi · Western Astrology
Understand your patterns.
Choose your timing.
BaZi means “Eight Characters,” the Chinese name for the Four Pillars birth chart also used in Korean Saju. Hongsimdang connects that structure with Zi Wei Dou Shu and Western astrology for practical questions about relationships, work, money, and everyday decisions.
What makes this different?
Correct the birth moment first. Interpret it second.
The free tools calculate each chart on its own. A paid Hongsimdang reading then compares the parts that genuinely overlap instead of blending every tradition into one vague horoscope.
02 · Traceable comparison
Three systems keep their boundaries
Agreement can strengthen a theme. Disagreement becomes a useful limit or tension instead of being hidden behind a confident claim.
03 · Everyday language
Patterns return to real decisions
The explanation comes back to messages, meetings, dating, money, recovery, and choices you can actually observe.
Start with the question you have
Free tools and guides in the Hongsimdang reading style
Calculations stay deterministic. Explanations stay practical, limited, and clear about uncertainty.
One person
Free BaZi calculator
See the Four Pillars, Day Master, Five Element balance, role balance, and current luck-cycle flow.
Open →
Two people
Free BaZi compatibility
Compare two independently localized charts through attraction, stability, repair, long-term rhythm, and tension.
Open →Twelve palaces
Free Zi Wei Dou Shu calculator
Build the Life Palace, Body Palace, Five Element Bureau, main stars and twelve-palace birth chart.
Open →
Western astrology
Free birth chart calculator
See planetary degrees, rising sign, Midheaven, Placidus houses and major natal aspects.
Open →Plain-English guide
How a Saju reading works
Learn what BaZi can describe, what birth time changes, and why a chart is not a fixed verdict.
Open →Explore by everyday question
Start with work, love, money, or timing
Overseas birth
Which birth time should I enter across time zones?
Use the local birth record, historical city time zone, daylight-saving rule, and longitude without converting by hand.
Unknown time
What can a BaZi chart still show without the hour?
Keep the three known pillars and learn which hour-based details should remain limited instead of guessed.
Work
Why does the same work pattern keep repeating?
Translate chart roles into meetings, recognition, responsibility, and career-change criteria.
Love
What happens when closeness creates more guessing?
Explore messages, reassurance, distance, conflict, and commitment without a destined-partner claim.
Money
Is the pressure about earning, keeping, or risking money?
Separate Wealth Star language from budgets, pricing, cash flow, and real financial evidence.
Timing
Why does a strategy stop fitting a new period?
Understand ten-year luck pillars as changing conditions rather than a fixed event schedule.
Personal reading · $9.99 USD
Go beyond the chart into relationships, work, money and decisions
The Personal Pattern Reading connects your Four Pillars with Zi Wei Dou Shu and Western astrology, then explains the overlap in practical English without treating it as a fixed verdict.