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WorkDay Business Days, Holidays & Time Zones

Add or count business days with US, UK and Canada holidays, or your own calendar. Convert times across IANA zones.

Endpoints

Path	What it does
`/add`	Add or subtract business days
`/count`	Count business days between dates
`/check`	Is this date a working day?
`/holidays`	List holidays for a year
`/convert`	Convert a local time between time zones
`/now`	Current time in up to 20 zones
`/diff`	Exact difference between two datetimes
`/timezones`	List IANA time zones
`/countries`	Holiday calendars

Examples

Replace YOUR_KEY with your RapidAPI key. Host: workday-business-days-holidays-time-zones.p.rapidapi.com

curl

curl --request GET \
  --url 'https://workday-business-days-holidays-time-zones.p.rapidapi.com/add?start=2026-11-25&days=3&country=US' \
  --header 'X-RapidAPI-Key: YOUR_KEY' \
  --header 'X-RapidAPI-Host: workday-business-days-holidays-time-zones.p.rapidapi.com'

JavaScript

const res = await fetch('https://workday-business-days-holidays-time-zones.p.rapidapi.com/add?start=2026-11-25&days=3&country=US', {
  headers: {
    'X-RapidAPI-Key': process.env.RAPIDAPI_KEY,
    'X-RapidAPI-Host': 'workday-business-days-holidays-time-zones.p.rapidapi.com'
  }
});
const data = await res.json();

Python

import os, requests
r = requests.get(
    'https://workday-business-days-holidays-time-zones.p.rapidapi.com/add?start=2026-11-25&days=3&country=US',
    headers={
        'X-RapidAPI-Key': os.environ['RAPIDAPI_KEY'],
        'X-RapidAPI-Host': 'workday-business-days-holidays-time-zones.p.rapidapi.com',
    },
)
print(r.json())

Notes

Nothing you send is stored by our code. Calls go through RapidAPI, which bills according to the plan you pick. The origin runs on Cloudflare Workers.