Hi Rao,

Try:

=DATE(YEAR(B10),MONTH(B10)+1,0)


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Regards,
Norman



"Rao Ratan Singh" wrote in message
...
I m using this function for Date sum =DATE (YEAR (B10), MONTH (B10) +1,
31).
This function calculates Days which we specify in this function. Is there
any
way that days of particular month automatically detect last day of the
month?

1/1/2006
1/2/2006
Its sum should be = 3/31/2006

Thanks and Regard

RRS