Last revised: 2026-10-18
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Chinese Calendar Public Dataset · Semantic Endpoint
Full versions: 中文 /dataset/ 丨 English /dataset-en/. This page is an entry summary; the complete English text is /dataset-en/.
This page is the English entry to the Chinese Calendar Public Dataset. The dataset is computed offline from the NASA JPL DE421 ephemeris and arranged to the national standard GB/T 33661-2017; nothing on this site is a prediction or an evaluation, only the record of a computation.
1. The semantic endpoint
The machine-readable description — the JSON-LD block written to the Schema.org specification, covering the dataset’s author, licence, DOI and temporal coverage, together with six key calendrical landmarks (the pre-Qin quarter-day calendars, the Taichu calendar reform, the continuity of the sexagenary day count, the institutionalisation of the sexagenary year count, the Shoushi calendar and the Shixian calendar) — is published once, on the Chinese endpoint /dataset/, so that one Dataset node answers for this dataset.
2. The three data items
The instants of the twenty-four solar terms (1900—2052 CE, year by year and term by term, to the second) ／ the table of calendar reforms (52 calendars) ／ the sexagenary day-count concordance (1900—2052, day by day). Each item is accompanied by a verification table.
3. The five-field matrix
Of the three, the 52 calendars of the reform table are laid out one by one on a single page of five fields — year beginning, solar-term method, new-moon method, intercalation, and tropical-year constant — every cell carrying its source and left blank where no source exists: Five-Field Matrix of 52 Chinese Calendars.
4. Machine-readable files
README_AI_AGENT.md (the repository entry point for AI agents) ｜ dataset-semantic-matrix.jsonld (the static source of the JSON-LD) — both in the repository root at github.com/Kuangchujia/chinese-calendar-dataset.
5. Author, licence and DOI
Author: Chujia Kuang ｜ Licence: CC BY 4.0 ｜ DOI: 10.5281/zenodo.22788686 ｜ Code: github.com/Kuangchujia/chinese-calendar-dataset
6. Related pages
Publications — the full index of the dataset, the preprints, the code and the citation format. ｜ 先秦历法演变 · Pre-Qin Calendar Evolution — the three zhengs and the shifting of the year beginning. ｜ Calendar Reform — how the year beginning was moved. ｜ 术语命名空间 /ns/ — the machine-readable definitions this dataset is described with.
All data on this page were collected and compiled by Chujia Kuang.