Microsoft Office Tutorials and References
In Depth Information
example of a formula that uses the DATEDIF function (it assumes cells A1 and A2 contain a date). The formula
returns the number of complete years between those two dates.
The following table displays valid codes for the third argument. You must enclose the codes in quotation marks.
The start_date argument must be earlier than the end_date argument, or the function returns an error.
Here's a similar formula that returns the day of the year for the current date:
The following formula returns the number of days remaining in the year from a particular date (assumed to be
in cell A1):
When you enter this formula, Excel applies date formatting to the cell. You need to apply a non-date number
format to view the result as a number.
To convert a particular day of the year (for example, the 90th day of the year) to an actual date in a specified
year, use the formula that follows. This formula assumes that the year is stored in cell A1 and that the day of the
year is stored in cell B1.
Determining the day of the week
The WEEKDAY function accepts a date argument and returns an integer between 1 and 7 that corresponds to
the day of the week. The following formula, for example, returns 3 because the first day of the year 2013 falls
on a Tuesday:
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