API

Free business-day API

Static JSON for every supported country and year.

Endpoints

GET https://workdaykit.pages.dev/api/v1/business/{CC}/{YYYY}.json

Example: /api/v1/business/US/2026.json

Fields

businessDays — total business days in the year
monthly — business days per month
holidays — public holiday dates to exclude
makeup — China 补班 workdays counted as business days