# Japan Cross-Border Business Day Overlap Checker

> Japan Cross-Border Business Day Overlap Checker is a paid API for AI agents from jp-data-api-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Checks whether a given date is a business day in both Japan and a specified country, accounting for public holidays and weekends in both jurisdictions.

## Facts

- Endpoint: GET https://jp-data-api-production.up.railway.app/calendar/overlap
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/japan-cross-border-business-day-overlap-checker-1d54dc47
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fhkVqJc9xk195kA0IoHJk

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability japan-cross-border-business-day-overlap-checker-1d54dc47
```

Example prompt: Is March 20, 2025 a business day in both Japan and the US? I need to confirm it works as a settlement date for a JPY/USD FX trade.

## When to prefer this

Use this endpoint when you specifically need to verify business day overlap between Japan and another country — for FX settlement (T+2 calculations), international contract deadlines, cross-border logistics cutoffs, or scheduling meetings across Tokyo and a foreign office. It is more precise than a generic holiday API because it simultaneously evaluates both Japan's holiday calendar and the counterpart country's calendar in a single call.

## Known failure modes

- Invalid or missing date format (not YYYY-MM-DD) — likely 400 error
- Invalid or unsupported ISO2 country code — likely 400 or empty result
- Future dates beyond holiday data coverage — may return incomplete results
- Network timeout or Railway platform downtime — 5xx error
- Missing required query parameters (country or date) — 400 error

## How this service works

Cross-border business day overlap between Japan and any country (ISO2): checks holidays in both countries plus weekends for a given date. Use for international meeting scheduling, FX settlement dates (T+2), global team coordination, contract deadlines, logistics cutoffs.

## Output

Returns whether the queried date is a mutual business day in Japan and the specified country, with flags indicating whether either country has a public holiday or weekend on that date, enabling reliable cross-border scheduling and settlement date validation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "country",
      "date"
     ],
     "properties": {
      "date": {
       "type": "string",
       "description": "YYYY-MM-DD"
      },
      "country": {
       "type": "string",
       "description": "ISO 3166-1 alpha-2, e.g. US, DE, CN"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/japan-cross-border-business-day-overlap-checker-1d54dc47/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from jp-data-api-production.up.railway.app](https://www.zero.xyz/host/jp-data-api-production.up.railway.app/llms.txt)