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Date Difference

Calculate the exact difference between two dates and times.

Guide

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Date Difference
Add or subtract days

Find the resulting date after adding or subtracting a number of days from the start date, optionally counting business days only.

Use a negative number to subtract days instead of adding them.

How to use it

  1. Enter start and end dates using the displayed date/time format.
  2. Select Calculate difference and review the calendar and elapsed-time components.
  3. Expand Add or subtract days for a separate offset from the start date; negative values subtract.
What is Date Difference?

Calculate the exact difference between two dates and times.

How it works

SiteIndex calculates the exact difference between two dates. The Advanced panel can also add or subtract a number of days from a start date, optionally counting business days only.

Common uses
  • Find the exact duration between two events.
  • Calculate a deadline a set number of business days from today.
  • Plan a schedule by adding or subtracting days from a known date.
Limitations
  • Timezone-less dates use the device timezone; daylight-saving transitions can make calendar days differ from 24-hour periods.
  • Business days skip weekends only, not public holidays.
Frequently asked questions
How are business days calculated?
Business days skip Saturdays and Sundays only; regional public holidays are not accounted for.

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