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Custom Excluded-Date Calculator

Count business days between a start and a deadline after excluding your own specific dates, such as planned closures, without relying on a preset holiday region.

Want a preset regional holiday calendar instead of your own list? See Holiday Impact Calculator.

Worked example

From Monday to Friday of one week, excluding Wednesday twice, a duplicate entry, still only removes Wednesday once, so the business-day count goes from 4 to 3, not from 4 to 2, since a date is either excluded or it is not, regardless of how many times it appears in the list.

Common mistakes

  • Listing the same date more than once and expecting it to count double. A date is either excluded or it is not, no matter how many times it appears in the list.
  • Excluding a date that already falls on a weekend, expecting the count to drop by one. That date was never counted as a business day to begin with, so removing it changes nothing.

Limitations

This applies your own excluded dates only, without any preset holiday region. Combine it with the Holiday Impact Calculator's data separately if regional holidays also need to be excluded from the same count.

Frequently asked questions

How many dates can be excluded at once?
Up to 366 dates, enough to cover a full year of planned closures entered one per line.
What happens if an excluded date falls on a weekend?
It has no effect on the count, since a weekend date was never going to count as a business day in the first place. Only excluded dates that would otherwise have been business days change the total.