Is a date a holiday · Calendar API

GET https://api.api.sh/calendar/v1/is-holiday

1 credit / call public data try it in the playground →

Whether a date is a public holiday, a weekend day or a business day in a country (and region), with the holidays on that date.

Every response includes credits_used: the credits this call cost.

Parameters

name	type	description
`country`required	string	Country: ISO code or English name. See /calendar/v1/holiday-countries. Example: `GB`
`date`	string	Date (YYYY-MM-DD, default today). Example: `2026-12-25`
`subdivision`	string	State, province or region code (e.g. `TX`, `BY`, `ENG`) to add its own holidays to the national ones.
`category`	string	Holiday category: `public` (default) or the country's others, e.g. `bank`, `government`, `optional`, `school`, `unofficial`; comma-separated or `all`.

Every endpoint also takes fresh, raw, fields (see lean responses and caching).

Example

curl "https://api.api.sh/calendar/v1/is-holiday?country=GB" \
  -H "x-api-key: $APISH_KEY"

import os, requests

res = requests.get(
    "https://api.api.sh/calendar/v1/is-holiday",
    params={"country": "GB"},
    headers={"x-api-key": os.environ["APISH_KEY"]},
    timeout=120,
)
res.raise_for_status()
data = res.json()

const url = new URL("https://api.api.sh/calendar/v1/is-holiday");
url.searchParams.set("country", "GB");

const res = await fetch(url, { headers: { "x-api-key": process.env.APISH_KEY } });
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const data = await res.json();

Response

A JSON object with the fields described above, plus raw (the source's own data), cached, fetched_at and credits_used. Errors return {"success": false, "error": "…"} with the HTTP status (see errors). A lookup that ran but found nothing (404) costs the price above; refused calls and errors on our side are free (what's charged).

The fastest way to see the full response is the playground: it runs this endpoint with your account and shows the exact JSON.