JESS: Difference between dates

"ANA TANASESCU" <[email protected]>
Newsgroups gmane.comp.java.jess
Message-ID <19644_1283511435_o83AuAn4020941_513906.81610.qm@web52007.mail.re2.yahoo.com> 
Hallo again,

I have read on JessWiki about working with Dates and I have found a few interesting functions. I need in my program to calculate the difference between two dates (number of days). Therefore, I have converted the date in milisecond, I have used the diff-time function (http://www.jessrules.com/jesswiki/view?DiffTime) and converted the result in days.
First it seems to work, but if I use month like february it looks that this function considers that all months have 30 days. 
I thought that after converting in miliseconds I could use this function like datediff in ACCESS. 
What shall I do?

Best regards,
Ana
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