By default the WORKDAY function will ignore weekends ie. SUM A125 Format column B1 as a date. Below is the DATEDIF formula that will do that.
WORKDAY function can be used for calculating due dates expected delivery times or the number of days of work performed.
Y refers to only years. For example DATE 2016135 returns the serial number representing February 4 2016. You can also exclude holidays by supplying a range of cells that contain holiday dates. Suppose you have a dataset as shown below where you only want to get the total number of months and not the days.