Turkish business-day calculator 2026

Add N business days to a start date or count business days between two dates. Plain-language «i» tips for national holidays, Hijri feasts and arife half-days.

Idle $0 This calculator is free (demo quota) Paid = API key for software integration Not legal advice

Not legal advice. Religious feast dates depend on Diyanet announcements; unconfirmed years return confirmed:false. Confirm with counsel or your internal SLA before acting.

Calculator form

Mode

Add / subtract business days Count between two dates

Start date

Business days to add (N)

Count arife (half-day) as a workday

Proceed to pay · API access

Results appear here

Pick a mode, enter dates, then Calculate. Result date or count and skipped holidays open as cards. Next: wire the same endpoint into your software via API.

Rules (summary)

Weekend + public/religious holiday = not a business day · arife half-day is a flag · add mode does not count the start day · count mode is inclusive · sources: Official Gazette + Diyanet.

Does arife count as a workday?

Business decision. Default yes (half-day = work). If your SLA treats afternoon as closed, uncheck the box; the result may shift by a day.

Are religious feast dates final?

Future years are estimates until Diyanet announces (confirmed:false). After announcement they become confirmed:true. Uncertainty is explicit instead of a silent wrong date.