Formula to show differens between dates without weekends and holidays

Question

If anyone know formula without code in SharePoint 2010 to show differens between dates without weekends and holidays, I'm trying to find solution but no result so far ...

I will be veru gratefull for support,

Answer 1

If you plan to do a calculated column, than indeed there is no out-of-the-box function that would it for you. The closest you could get is using the WEEKDAY to detect which day of a week it represents, and remove those (maybe build multiple calculated columns as support). I did found something close to what you are looking for (EXCEPT HOLIDAYS), maybe it helps:

=DATEDIF([Start Date],[Due Date],"D")-IF(WEEKDAY([Due Date])=7,FLOOR((DATEDIF([Start Date],[Due Date],"D")+WEEKDAY([Start Date]))/7,1)*2,FLOOR((DATEDIF([Start Date],[Due Date],"D")+WEEKDAY([Start Date]))/7,1)*2+1)+IF(WEEKDAY([Start Date])=7,2,1)

With SharePoint designer, if you plan to use this in a customization of a web part, with XSLT you could achieve the same, again, darn complicated - still nothing for Holidays as these are too specific - http://www.sharepointbloggers.com/2009/03/data-view-customization-calculating.html

In InfoPath though is much easier - few pointers http://alecpojidaev.wordpress.com/2008/12/30/infopath-codeless-programming-walkthrough-2/

Answer 2

There's definitely no OOTB function that can do this. Just consider the different holidays around the world. How could you write a universal formula that takes into account all the different countries and calendar variations? So, I'm afraid you have to resort to some custom code functionality to do the calculation.

Answer 3

I achieved this by using a calculated column and a workflow. Users choose a start date and end date. A calculated column calculates the interval and removes any weekend days from the result with this formula:

(=IF(AND((WEEKDAY(EndDate,2))<(WEEKDAY(StartDate,2)),((WEEKDAY(StartDate,2))-(WEEKDAY(EndDate,2)))>1),(((DATEDIF(StartDate,EndDate,"D")+1))-(FLOOR((DATEDIF(StartDate,EndDate,"D")+1)/7,1)*2)-2),(((DATEDIF(StartDate,EndDate,"D")+1))-(FLOOR((DATEDIF(StartDate,EndDate,"D")+1)/7,1)*2))))

I then created a list of all holidays, numbering them 1-10

Create a workflow with variables: check date=StartDate and requested days=calculated column.

This will check your start date against your holiday list and subtract a day if there is a match, then it will increment to start date +1 and check again; this repeats until the end date has been checked.