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Datasets:
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Chinese-Calendar-Data

Modalities:
Tabular
Text
Formats:
parquet
Languages:
Chinese
Size:
1M - 10M
Tags:
astronomy
calendar
chinese-calendar
lunar-calendar
almanac
ephemeris
Libraries:
Datasets
Dask
Polars
License:
Dataset card Data Studio Files
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Chinese-Calendar-Data / README.md
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metadata 
license: mit
language:
  - zh
pretty_name: Chinese Calendar Data
tags:
  - astronomy
  - calendar
  - chinese-calendar
  - lunar-calendar
  - almanac
  - ephemeris
configs:
  - config_name: days
    data_files: data/v1/days/*.parquet
  - config_name: calendar_months
    data_files: data/v1/calendar_months/*.parquet
  - config_name: calendar_events
    data_files: data/v1/calendar_events/*.parquet
  - config_name: astro_months
    data_files: data/v1/astro_months/*.parquet
  - config_name: astro_events
    data_files: data/v1/astro_events/*.parquet
  - config_name: eclipse_years
    data_files: data/v1/eclipse_years/*.parquet
  - config_name: solar_eclipses
    data_files: data/v1/solar_eclipses/*.parquet
  - config_name: lunar_eclipses
    data_files: data/v1/lunar_eclipses/*.parquet

Chinese Calendar Data

A lossless, versioned Parquet publication of Chinese calendar, Huangli, lunar phase, solar-term, eclipse, and astronomical-event data generated by CalcChineseCalendar (CCC).

The dataset title intentionally does not contain a year range. Release v1 covers civil years 1950 through 17000, inclusive. Civil dates and times are stored as numeric columns and never require JavaScript Date.

Release facts

  • Civil timezone: UTC+08:00
  • Lunar day boundary timezone: UTC+08:00
  • Huangli longitude: 120 degrees east
  • Ephemeris: JPL DE441, with exact source hashes in metadata/v1/manifest.json
  • Huangli profiles: folk, ziping, purple, xieji
  • Far-future civil dates use CCC's documented delta-T extrapolation
  • Source web-data validation: 15,051/15,051 years passed, zero failed years

Tables

Config Row meaning Important contents
days one civil day Gregorian/lunar date, festivals, daily Moon state, four Huangli profiles, event references
calendar_months one civil month month metadata and source event/day counts
calendar_events one solar term or exact four-phase event civil second, JD TDB/UTC, original time strings
astro_months one civil month observer metadata and source event count
astro_events one astronomy event typed common event coordinates plus lossless event-specific payload
eclipse_years one civil year date-assignment and Greatest Eclipse metadata
solar_eclipses one solar eclipse assignment event plus lossless full technical data
lunar_eclipses one lunar eclipse assignment event plus lossless full technical data

Small release metadata remains JSON/Markdown because it is configuration and documentation, not tabular data. All high-volume records are Parquet.

Complex objects that do not yet have one stable cross-kind Arrow schema are stored as canonical UTF-8 JSON in binary columns. This is deliberate: it preserves missing versus null, list order, double precision, and all source-defined fields. metadata/v1/PARQUET_FORMAT.md documents the exact round-trip rules.

Provenance and validation

The authoritative source manifest, schema, dictionaries, SHA-256 list, and validation report are published under metadata/v1/. Every published Parquet file was read back and checked for file hash, schema, row count, canonical payload parsing, and lossless source-object reconstruction.

License

MIT. See LICENSE. JPL DE441 is identified as scientific input provenance; the BSP kernels themselves are not redistributed in this Dataset repository.