bizcal

Public holidays and business-day arithmetic for US (federal) and GB (England & Wales bank holidays). Fully algorithmic, no external data, deterministic. Observed/substitute dates are returned with the rule used, so results are auditable.

Free

GET /day?country=US&date=2026-07-03
GET /health
GET /openapi.json

Paid ($0.01/request, x402 USDC on Base)

GET /add?country=US&date=2026-12-24&days=3      -> next business day N working days away
GET /between?country=GB&start=2026-01-01&end=2026-12-31  -> business days in a range
GET /year?country=US&year=2026                     -> full holiday list for a year

Supported countries: US (United States (federal holidays)), GB (United Kingdom (England & Wales bank holidays)). Unsupported country codes are rejected with 400 — no silent wrong answers.

Note: GB covers England & Wales bank holidays only (Scotland/N. Ireland differ and are not served).