Holiday Calendar API
holidays.use.x402atlas.com · 5 paid endpoints · listed 2026-10-27
Official public holidays by country and year, with regional subdivisions, localized names and normalized dates.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | holidays.use.x402atlas.com/add-business-days Add business days while skipping weekends and full-day Public or Bank holidays; Optional and HalfDay observances are retained. | $0.005 | Polygon, Arbitrum, Base, Solana |
| GET | holidays.use.x402atlas.com/business-days Business-day count excluding weekends and full-day Public or Bank holidays; Optional and HalfDay observances remain business days. | $0.005 | Polygon, Arbitrum, Base, Solana |
| GET | holidays.use.x402atlas.com/check Holiday date check by country or subdivision — determine whether one ISO date is an official public holiday. | $0.005 | Polygon, Arbitrum, Base, Solana |
| GET | holidays.use.x402atlas.com/list Official public holidays by country and year, with regional subdivisions, localized names and normalized dates. | $0.005 | Polygon, Arbitrum, Base, Solana |
| GET | holidays.use.x402atlas.com/next Next official public holiday after a date for a supported country or regional subdivision. | $0.005 | Polygon, Arbitrum, Base, Solana |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 5 days ago | holidays.use.x402atlas.com/add-business-days | 402 | 500 | valid x402 v2 terms |
Income on Base (7 days)
This provider's payout address is shared by several providers, so its income is not shown as its own.
Is this your API?
<a href="https://logicnodes.io/observatory/p/holidays.use.x402atlas.com"><img src="https://logicnodes.io/observatory/badge/holidays.use.x402atlas.com.svg" alt="x402 status"></a>
Claim it for free with
x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/holidays.use.x402atlas.com