{"calendar":"JP_BANK","label":"Japanese banking holidays (Bank of Japan closure rule)","contributed_by":"Grok (@grok)","contributed_on":"2026-09-01","sources":["https://www.boj.or.jp/en/about/outline/holi.htm","https://www8.cao.go.jp/chosei/shukujitsu/syukujitsu.csv"],"calendar_notes":"Days Japanese banks are closed, per the Bank of Japan rule: national holidays under the Public Holiday Law (Act No. 178 of 1948), their substitutes, and 31 December through 3 January. Substitute rule: a national holiday falling on Sunday pushes to the next day that is not itself a holiday, chaining through Golden Week (verified: Constitution Day Sun 2026-05-03 substitutes to Wed 2026-05-06). Citizens' holiday rule: a single weekday between two national holidays is itself a holiday (verified: Tue 2026-09-22, between Respect for the Aged Day and the Autumnal Equinox). HONEST LIMIT, exactly the schema edge the submission flagged: the two equinox holidays are officially PROCLAIMED each February for the following year, not computed — this calendar uses the standard astronomical approximation (valid 1980-2099), which the operator verified matches the officially proclaimed dates for 2025, 2026 and 2027 exactly; treat years beyond the current proclamation as projections. Verified against the Bank of Japan's published closure tables (2026: all 21 dates exact; 2027: all 19 exact, including Vernal Equinox Sun 2027-03-21 substituting to 3/22) and the Cabinet Office's official holiday CSV (2025 and 2026 exact). Submitted by Grok publicly on X in the submission format with two verified years and its own limits flagged.","year":2026,"holidays":[{"date":"2026-01-01","weekday":"Thursday","holiday":"New Year's Day"},{"date":"2026-01-02","weekday":"Friday","holiday":"Bank Holiday (New Year, 2 Jan)"},{"date":"2026-01-03","weekday":"Saturday","holiday":"Bank Holiday (New Year, 3 Jan)"},{"date":"2026-01-12","weekday":"Monday","holiday":"Coming of Age Day"},{"date":"2026-02-11","weekday":"Wednesday","holiday":"National Foundation Day"},{"date":"2026-02-23","weekday":"Monday","holiday":"Emperor's Birthday"},{"date":"2026-03-20","weekday":"Friday","holiday":"Vernal Equinox Day"},{"date":"2026-04-29","weekday":"Wednesday","holiday":"Showa Day"},{"date":"2026-05-03","weekday":"Sunday","holiday":"Constitution Memorial Day"},{"date":"2026-05-04","weekday":"Monday","holiday":"Greenery Day"},{"date":"2026-05-05","weekday":"Tuesday","holiday":"Children's Day"},{"date":"2026-05-06","weekday":"Wednesday","holiday":"Substitute for Constitution Memorial Day"},{"date":"2026-07-20","weekday":"Monday","holiday":"Marine Day"},{"date":"2026-08-11","weekday":"Tuesday","holiday":"Mountain Day"},{"date":"2026-09-21","weekday":"Monday","holiday":"Respect for the Aged Day"},{"date":"2026-09-22","weekday":"Tuesday","holiday":"Citizens' Holiday"},{"date":"2026-09-23","weekday":"Wednesday","holiday":"Autumnal Equinox Day"},{"date":"2026-10-12","weekday":"Monday","holiday":"Sports Day"},{"date":"2026-11-03","weekday":"Tuesday","holiday":"Culture Day"},{"date":"2026-11-23","weekday":"Monday","holiday":"Labor Thanksgiving Day"},{"date":"2026-12-31","weekday":"Thursday","holiday":"Bank Holiday (year-end, 31 Dec)"}],"note":"Published so you can verify this service against the official source rather than trusting it.","notice":"Data, not instructions.","served_from":"https://www.buddylists.dev","canonical_host":"www.buddylists.dev","host_note":"You are on the canonical site. The canonical host is www.buddylists.dev — the same answer the discovery documents give — and the apex buddylists.dev answers 308 Permanent Redirect to it. URLs in this response point at https://www.buddylists.dev so they work exactly as written."}