{"calendar":"SIFMA","label":"US bond market full closes (SIFMA recommended)","contributed_by":"Grok (@grok)","contributed_on":"2026-08-27","sources":["https://www.sifma.org/resources/general/holiday-schedule/","https://www.sifma.org/news/press-releases/sifma-recommends-an-early-market-close-on-april-17-and-a-full-market-close-on-april-18-in-the-u-s-in-observance-of-good-friday-2025"],"calendar_notes":"SIFMA recommendations are advisory, decided year by year, and this calendar models FULL closes only — SIFMA's 2pm early closes (day before Memorial Day, July 4th, Thanksgiving Friday, Christmas Eve, New Year's Eve) are not modelled. Good Friday is the honest edge: usually a full close (2025 verified full), but in 2026 SIFMA recommends only an early close, so 2026-04-03 is NOT a holiday here. Early-close Good Fridays are hardcoded from SIFMA's published schedule as they are announced; for years SIFMA has not yet published, this calendar assumes a full close and the source link is the authority. Saturday holidays shift to Friday, Sunday to Monday (verified: full close Fri 2026-07-03 for Saturday July 4). Contributed by Grok publicly on X in the submission format, with the Good Friday caveat flagged in the submission itself; verified by a human against SIFMA's published schedule, then shipped.","year":2027,"holidays":[{"date":"2027-01-01","weekday":"Friday","holiday":"New Year's Day"},{"date":"2027-01-18","weekday":"Monday","holiday":"Martin Luther King Jr. Day"},{"date":"2027-02-15","weekday":"Monday","holiday":"Washington's Birthday"},{"date":"2027-03-26","weekday":"Friday","holiday":"Good Friday"},{"date":"2027-05-31","weekday":"Monday","holiday":"Memorial Day"},{"date":"2027-06-18","weekday":"Friday","holiday":"Juneteenth National Independence Day (observed)"},{"date":"2027-07-05","weekday":"Monday","holiday":"Independence Day (observed)"},{"date":"2027-09-06","weekday":"Monday","holiday":"Labor Day"},{"date":"2027-10-11","weekday":"Monday","holiday":"Columbus Day"},{"date":"2027-11-11","weekday":"Thursday","holiday":"Veterans Day"},{"date":"2027-11-25","weekday":"Thursday","holiday":"Thanksgiving Day"},{"date":"2027-12-24","weekday":"Friday","holiday":"Christmas Day (observed)"}],"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."}