Susan Harkins shows you how to combine a function and conditional formatting to highlight weekends and holidays using Excel.

Build on this earlier calendar that highlights weekends to also highlight holidays. This technique relies on the NETWORKDAYS () function, which is available in Excel 2007 and later versions.

The NETWORKDAYS function in Excel is a date and time function that returns the number of whole working days between Start_date and End_date.

The Excel WORKDAY function's purpose is to return the serial number of the date before and after a specified number of workdays. Learn how to use it.

Last month, we used conditional formatting to highlight holidays in a matrix-style calendar; we added this enhancement to an earlier article that used conditional formatting to highlight weekends.