which returns TRUE, since Monday, Dec. 21, 2015 is a workday.
How this formula works
The WORKDAY function calculates dates in the future or past that are (by definition) "workdays". In other words, WORKDAY automatically excludes weekends and (optionally) holidays.
WORKDAY accepts 3 arguments: start_date, days, and an (optionally) holidays.
In this case, we supply (date - 1) for start_date, 1 for days, and the named range "holidays" (E5:E6) for holidays.
This causes WORKDAY to step back one day, then add 1 day to the result, taking into account weekends and holidays. Effectively, we are "tricking" WORKDAY into evaluating the start_date. (Unfortunately, the cleaner syntax WORKDAY(date,0) doesn't work).
When the date falls on a weekend or holiday, WEEKDAY will automatically adjust the date forward to the next working day.
Finally, we compare the original start_date to the the result of the WORKDAY function. If the dates are the same (i.e. the result of WORKDAY equals the start_date, the formula returns TRUE. If not, the formula returns FALSE.
Ensure a calculated date falls on a workday
To make sure any calculated date lands on a business day, just use the following formula:
To get the next working day, or next business day, you can use the WORKDAY function. In the example shown, the formula in C4 is: = WORKDAY ( B4 , 1 , holidays ) How this formula works The WORKDAY formula is fully automatic. Given a date and days, it...
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The Excel WORKDAY function takes a date and returns the nearest working day in the future or past, based on an offset value you provide. You can use the WORKDAY function to calculate things like ship dates, delivery dates, and completion dates...
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