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How to Use the Business Date Calculator

The Business Date Calculator adds or subtracts any number of business days or non-working days from a date of your choice.

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The Business Date Calculator is an extension of our Date Calculator that allows you to exclude weekends or public holidays when adding or subtracting a specified number of days from a date of your choice.

Count days excluding weekends and holidays

Setting Up a Calculation

To make a calculation, please make your selections in the set-up form and click the green "Calculate new date" button.

Choosing the Start Date

Start by entering the date you wish to use as a starting point for your calculation. You can use any date in the years 1 through 3999, although holiday support will be reduced far back in time. You can type the numbers in the boxes, use the drop-down menus that open if you click inside the boxes, or use the calendar pop-up window. To use the current date, please click on the link “Today”.

Adding or Subtracting Days

In the “Add/Subtract” drop-down menu, select adding or subtracting days to or from the start date. Then enter the number of days into the “Days” field.

To execute multiple additions or subtractions using the same start date, you can enter several numbers into that field. Please separate them by a space or a comma.

Example: To find out the date 100, 120, and 140 days from the start date, enter “100 120 140” or “100,120,140”.

It is also possible to add or subtract the same amount of days multiple times. Please see the “Using the Repeat Option” section below.

Choosing Which Days Should Be Included

The drop-down menus entitled “Days in results” allow you to specify which days should be included in the calculation.

If “Exclude” is selected in the first menu, the calculator will include all days except the days specified in the second menu. If “Include only” is selected, it will include only the days specified in the second menu.

Excluding Weekend Days or Public Holidays (Including Only Business Days)

To include only business days, select “Exclude” and “Weekends and public holidays”. It is also possible to skip only public holidays (select “Exclude”/“Public holidays”) or only weekend days (select “Exclude”/“Weekends”).

Including Only Public Holidays and Weekend Days

To include only public holidays and weekend days (non-working days), select “Include only” and “Weekends and public holidays”. It is also possible to include only public holidays (select “Include”/“Public holidays”) or only weekend days (select “Include”/“Weekends”).

Including Both Business Days and Non-Working Days

If you do not wish to exclude any days, please select “Exclude”/“No days” or “Include”/“All days”. You can also use our Date Calculator.

Using the Repeat Option

It is possible to add or subtract the same amount of days multiple times. To do so, please enable the “Repeat” option, then enter the number of times the calculation is to be executed.

Example: To find out the dates 11, 22, 33, and 44 days from the start date, enter 11 into the “Days” field, enable the “Repeat” option and enter 4 into the “Calculate ... times” field.

It is also possible to enter multiple numbers into the “Days” field, separated by a space or a comma. However, the repeat functionality will then not be available.

Reading the Results

Once you click the green button, the calculation results are displayed on the same page, below the set-up form.

The calculation result is shown on the left side, together with a summary of your search query. The right half provides additional information:

  • the number of calendar days between the start and end dates
  • the number of skipped days (if you selected to exclude workdays, holidays, or weekends)
  • details about the skipped days (click on the links to find more information about a holiday, if applicable)

Selecting a Country and State

The Business Date Calculator provides country-specific results for public holidays and weekends; note that the weekend falls on Friday and Saturday in some countries, for example, the United Arab Emirates. It accesses timeanddate.com's holiday database to determine which days should be skipped.

To select which country's holiday schedule the calculator should use, please either click on “Change country” or, to change the default country throughout the website, follow these steps:

  • go to the site customization menu
  • click on “Change this” next to the “Time & Date Formats” header
  • select a country
  • click the green "Save settings" button at the bottom of the form

To use only the holidays in a subdivision (state, territory, province...) of the country, click on “Change state” and make a selection.

Please note: In some cases, many businesses may be open during a particular public holiday. The calculator will count these days as holidays anyway, so depending on the purpose of the calculation, the result may be misleading.

Frequently Asked Questions – FAQ

Why is Easter Monday and the Summer Bank Holiday in the UK not taken into account?

Some holidays in the United Kingdom, such as Easter Monday, are observed in some of its constituent countries only. The Summer Bank Holiday is observed on a different date in Scotland than in the other constituent countries. Both holidays are therefore categorized as “state holidays” in our system, and they are not taken into account unless you click on “Change state” and select one of the constituent countries where they are observed.

Why is this holiday not taken into account?

If you find a mistake, please let us know.

Please note: Our holiday database is maintained and expanded on a daily basis, however, mistakes can always happen. We take no responsibility for any such errors, and you use the information provided in this calculator at your own risk.


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