Data Saju › Editorial policy
Editorial Policy and How We Check the Numbers
Saju is a field where interpretations differ, so we think it matters to show clearly what was calculated and what was interpreted. This page sets out how Data Saju writes, checks its numbers and corrects mistakes.
Who makes it
The site and its calendar engine are built and run by the Scribe, a software and data engineer with 13 years' experience. Master Han is the site's AI character and never pretends to be a person. The rule tables (Ten Gods, the 12 life stages, symbolic stars) and reading criteria are being refined with review from a long-time student of saju, who prefers not to be named.
How the calculations are checked
Before any reading, the eight characters have to be right. Every change to the engine is checked automatically against the reference values below, and nothing ships if any of them fails.
- Solar-term times: the start of spring (Ipchun) must match, to the minute, the times published by the Korea Astronomy and Space Science Institute for 2000, 2024, 2025 and 2026 — for example 17:27 on 4 February 2024 (KST).
- Lunar calendar and leap months: the solar dates of Lunar New Year and Chuseok across several years from 1970 to 2026, and the leap months of 2020, 2023 and 2025.
- Pillar switch: a birth at 17:20 and one at 17:35 on 4 February 2024 must fall on either side of Ipchun, with different year and month pillars.
- Time corrections: the longitude correction for Seoul (about 32 minutes), converting a 1987 daylight-saving time back to standard time, and how the 11 pm–1 am hour (子時) is assigned to a day. Korea's daylight saving of 1948–61 and 1987–88 and its 1954–61 standard-time change are applied, and births abroad use the historical time zone of the birthplace.
- 10-year luck: whether the luck cycles run forward or backward by gender and the year stem's yin/yang, and whether the first cycle is right.
Supported dates run from 1900 to 2100.
How articles are written
- Every saju number in an article is recalculated with the engine. Figures such as “what share of people born in 2026 have a given Day Master” are counted with the same engine, not copied from elsewhere.
- Outside statistics come only from official sources, with a link. Birth counts and similar data come from bodies such as the US CDC (NVSS), Statistics Korea (KOSIS) and Japan's Ministry of Health, Labour and Welfare, cited in the text.
- Classics are cited by title. We quote only what can be traced to texts such as the Yuanhai Ziping, Sanming Tonghui, Ziping Zhenquan and Ditian Sui, and never attribute to them what they do not say.
- No charts of living celebrities or politicians. We do not speculate about people's private lives. Historical figures appear only when their birth date is on record.
- No fortune-telling as fact. Saju describes tendencies and timing. It does not replace decisions about health, money, law or career, and we never use fear (bad-luck years and the like) to push anyone to pay or act.
How AI is used
Answers from Master Han are written by AI on the spot, so they can be wrong or general — the chat screen says so. AI also helps draft the learning articles. The calculated values in those articles are re-run with the engine, and outside statistics and classical quotations are checked against their sources before publishing.
How mistakes are corrected
When someone reports a wrong calculation or statement, we first add the case to the engine tests to reproduce it, then fix it and check again. A corrected article shows an Updated date next to its publication date. Short template pages that only change a value are kept out of search, so that search shows the full articles.
Ads and tips
Data Saju is free. Server costs are covered by ads (Google AdSense) and voluntary tips. Neither has any influence on readings, and everything works the same whether or not you tip. Dates of birth are calculated in your browser and not stored on our servers — see the privacy notice.
Corrections and contact
If you spot a wrong calculation, an awkward reading or a sourcing problem, please write to 5253183asd@naver.com. We will check it, fix it and reply if needed.