# Countif problem with N/A

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#### winrz

##### Board Regular
I have this formula which looks at the dates in column N and compares it to another, column M. It does a good job at telling me how many entries there are for Jan, how many for Feb, etc..

what I cant figure out is as soon as someone puts a "N/A" into the date column N, this formula chokes.. I cannot figure out how or where to put an IF statement to look for the "N/A" and disregard it.

=SUMPRODUCT((MONTH(\$N\$17:\$N\$25)=MONTH(M17&0))*(YEAR(\$N\$17:\$N\$25)=\$J\$2))

N = column input for month and year
M = column that houses the 12 months to compare against
\$J\$2 = 2004

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