Business days between two dates in a country (and region), skipping its weekend days and holidays: calendar days, business days, weekend days, holidays falling on business days and the list of holidays. Or pass days to add (or subtract) business days to a date and get the resulting date.
Every response includes credits_used: the credits this call cost.
Parameters
name
type
description
countryrequired
string
Country: ISO code or English name. See /calendar/v1/holiday-countries. Example: US
start_date
string
Start date (YYYY-MM-DD; default the first day of this month, or today with days). Example: 2026-12-01
end_date
string
End date (YYYY-MM-DD; default the last day of start_date's month). Example: 2026-12-31
days
integer
Instead of end_date: business days to add (negative to subtract), up to 1000.
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.
import os, requests
res = requests.get(
"https://api.api.sh/calendar/v1/business-days",
params={"country": "US"},
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/business-days");
url.searchParams.set("country", "US");
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.