how to count dates and divide in years

Hello everyone,

I have a list of dates in 2009 and 2010, which are mixed together (and should stay that way). I would like to count how many dates are entered and divide them into 2009 dates and 2010 dates.

I know there's a formula called COUNT which counts the number of dates, but how do I divide them into different years? To make it a little more complicated: The dates are spread over 2 sheets (in the same file, don't worry), so I think it should be something like:

COUNT (#NAMESHEET1(A:A)) + COUNT( #NAMESHEET2(A:A))

and somehow divide in 2009 and 2010...

can anyone help me with this? Thanks in advance!

To best describe or illustrate your problem you would be better off attaching a dummy workbook, the workbook should contain the same structure and some dummy data of the same type as the type you have in your real workbook - so, if a cell contains numbers & letters in this format abc-123 then that should be reflected in the dummy workbook.

If needed supply a before and after sheet in the workbook so the person helping you can see what you are trying to achieve.

Doing this will ensure you get the result you need!

Maybe, assuming your dates are in column A on both sheets

for 2009 total

=SUMPRODUCT((YEAR(Sheet1!$A:$A)=2009)*1)+SUMPRODUCT((YEAR(Sheet2!$A:$A)=2009)*1)

and for 2010

=SUMPRODUCT((YEAR(Sheet1!$A:$A)=2010)*1)+SUMPRODUCT((YEAR(Sheet2!$A:$A)=2010)*1)

Adjust sheet names and column refs to suit.

Hope this helps