Ahh, it counts the blanks as 0s which is a January date a long time ago. Try
this;

=SUMPRODUCT(--ISNUMBER(A2:A2019),--(MONTH(A2:A2019)=1))


"bobh727" wrote in message
...
I am using the following formula to count the number of entries by month
in a
log.
=SUMPRODUCT(--(MONTH(DATA!A2:A2019)=1))
All of the other months sum correctly except month 1 which counts all
January entries and then all blank cells in the range--that is, cells
A1600
to A2019 are blank, waiting for future date entries.

Ideas, suggestions, help--all welcome here!