How do I calculate the number of working days between two dates?

Enter both dates and enable the business-day filter. The tool automatically excludes weekends and Turkish public holidays and displays the exact working-day count.

Which countries' public holidays are supported?

Turkey's official public holiday calendar is currently built in. Support for additional country calendars is in development.

Can I calculate dates before 1900?

Yes. The calculator supports dates in the Gregorian calendar going back centuries, though the holiday filter only applies to dates where a holiday calendar exists.

How does month addition handle end-of-month dates?

The tool correctly handles month-end edge cases. For example, adding one month to January 31 returns the last day of February rather than an invalid date.

Can I add the result to my calendar?

Yes. The result screen offers an ICS file download and an Add to Google Calendar button for any calculated date.

Does the countdown timer update automatically?

Yes. While the page is open, the timer refreshes in real time, showing remaining days, hours, minutes, and seconds.

Can I find the ISO week number for a date?

Yes. The result panel automatically shows which ISO 8601 week number any entered date falls in.

Date calculator — Free Online

🇹🇷 2026 Turkey Public Holidays (factor these into working-day counts)

Date	Holiday	Duration
Jan 1 (Thu)	New Year's Day	1 day
Mar 20-22	Ramadan Feast*	3 days (half day: Mar 19)
Apr 23 (Thu)	National Sovereignty and Children's Day	1 day
May 1 (Fri)	Labour and Solidarity Day	1 day
May 19 (Tue)	Commemoration of Atatürk, Youth and Sports Day	1 day
May 27-30	Sacrifice Feast (Eid al-Adha)*	4 days (half day: May 26)
Jul 15 (Wed)	Democracy and National Unity Day	1 day
Aug 30 (Sun)	Victory Day	1 day
Oct 29 (Thu)	Republic Day	1.5 days (half day from noon Oct 28)

* Religious holidays follow the lunar Hijri calendar — dates are an astronomical estimate, check the official Diyanet announcement to confirm.
Remember to exclude weekends and these holidays from working-day counts. Official Gazette has the authoritative list.

Start date

End date

days

Years

Months

Days

Working days22

Weekend days8

Weeks4.3

Months1.0

Sunday, 19 July 2026

Tuesday, 18 August 2026

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Date Calculator

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