Excel WORKDAY.INTL Function

 

Summary

The Excel WORKDAY.INTL function takes a date and returns the nearest working in the future or past based on an offset value you provide. Unlike the WORKDAY function, WORKDAY.INTL allows you to customize which days are considered weekends (non-working days). You can use WORKDAY.INTL function to calculate completion dates, ship dates etc. that take into account non-working days.



Purpose

Get date n working days in future or past Return value Next or previous working date based on inputs

Syntax

=WORKDAY.INTL (start_date, days, [weekend], [holidays])

Arguments

·       start_date - The start date.

·       days - The end date.

·       weekend - [optional] Setting for which days of the week should be considered weekends.

·       holidays - [optional] A list of one or more dates that should be considered non-work days.

Usage notes

WORKDAY.INTL figures out a date that represents the "nearest" working day N days in the past or future. Use a positive number as days for future dates and a negative number for past dates. This function is more robust than the WORKDAY function because it lets you customize which days of the week are considered weekends. Example formulas

D4=WORKDAY.INTL(B4,C4) // default - weekends excluded D5=WORKDAY.INTL(B5,C5,11) // weekend set to Sunday only

D6=WORKDAY.INTL(B6,C6,1,B9:B9) // default weekend with holidays

Weekends

By default, WORKDAY.INTL will exclude weekends (Saturday and Sunday). However, you can control which days are considered weekends by supplying a code from the table below for the weekend argument. Another easier way to specify weekend days is to use a "mask" to indicate weekends with ones and zeros. In this scheme a string of 7 ones and zeros are provided to indicate weekends were the first character is Monday and the last character is Sunday. Use one (1) to indicate weekend and zero (0) to indicate a working day. This method is more flexible since it allows you to designate any day of the week as a weekend i.e. non-working day.

For example:

=WORKDAY.INTL(A1,3,"0000000") // no weekends

=WORKDAY.INTL(A1,3,"1000000") // weekend = Mon =WORKDAY.INTL(A1,3,"1100000") // weekend = Mon+Tue =WORKDAY.INTL(A1,3,"1110000") // weekend = Mon+Tue+Wed =WORKDAY.INTL(A1,3,"1010000") // weekend = Mon+Wed

Holidays

WORKDAY.INTL can also optionally take into account holidays. For the holidays argument, supply a range that contains holiday dates. These dates are treated as non-working days and will not be included in the result. Weekend codes Use any of the codes below for the weekend argument to select a "fixed" weekend option.

 

Code

Weekend days

1 (default)

Saturday, Sunday

2

Sunday, Monday

3

Monday, Tuesday

4

Tuesday, Wednesday

5

Wednesday, Thursday

6

Thursday, Friday

7

Friday, Saturday

11

Sunday only

12

Monday only

13

Tuesday only

14

Wednesday only

15

Thursday only

16

Friday only

17

Saturday only

Notes:

·       If start_date is invalid, WORKDAY.INTL returns the #NUM! error.

·       If start_date + day is invalid, WORKDAY.INTL returns the #NUM! error.

·       If any holiday is invalid, WORKDAY.INTL returns the #NUM! error.

·       If weekend is invalid, WORKDAY.INTL returns the #VALUE! error.

Last n days

Explanation

To check if a date is within the last n days of today's date you can use a formula based on the TODAY and AND functions when both results are TRUE, the AND function will return TRUE. If either result is FALSE, the AND function will return FALSE.

Without future checks

The second test is meant to exclude any dates greater than or equal to today. This test only makes sense if data may include dates in the future.


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