japan-calendar

The software itself is licensed under the MIT License (see LICENSE).

The bundled holiday data (src/data/official.ts) is derived from the
Cabinet Office of Japan's "National Holidays" syukujitsu.csv.

  Source:  Cabinet Office of Japan, "National Holidays"
  URL:     https://www8.cao.go.jp/chosei/shukujitsu/syukujitsu.csv
  License: Creative Commons Attribution 4.0 International (CC BY 4.0)
           https://creativecommons.org/licenses/by/4.0/

Only the date and name columns are extracted, dates are normalized to
ISO 8601 format, and the result is baked into a TypeScript module.
No other content has been altered.