On Sun, 18 Oct 2009 17:23:14 +0300, "afdmello"
wrote:

I undertake trainings on sundays, wednesdays and Thursdays.

Is there a way that I can get the number of sundays, tuesdays and wednesdays
from January 2009 to September 30 2009

I use excel 2007

Thanking you

Afd


If your (inclusive) start date is in cell A1 and your (includive) end
date is in cell A2, try the following formula:

=SUMPRODUCT(LOOKUP(WEEKDAY(A$1+ROW(OFFSET(A$1,,,A$ 2-A$1+1))),ROW($1:$7),{1,0,1,0,1,0,0}))

The {1,0,1,0,1,0,0} at the end of the formula is a vector representing
Sunday, Monday, ..., Saturday where I have put a 1 for those weekdays
to be counted and a 0 for the others.

Hope this helps / Lars-Åke