This is a eaeir way to ask my prior question:

I want to caculate how many an exact day of the month there is between
two dates.

For example; How many 7th of the month is there between "1998/12/17"
and "2000/1/7". To make the problem simple, the day of the month (7)
is the day in the 2nd date.

______________________________________________
R-help@(protected)
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html