Lori713,
Here is a TIMTOWTDI solution. The Seconds2English module you will not find on CPAN as I wrote for learning purposes. The code has been cleaned up a bit - but that is on a hard drive sitting on a shelf. 
#!/usr/bin/perl -w
use strict;
use Time::Local;
use Seconds2English;

my $date1 = epoch('2004-02-24');
my $date2 = epoch('1999-06-30');
my $diff = Seconds2English->new('start' => $date2 - $date1);

print "The difference is " , int $diff->in_months, " months\n";

sub epoch {
   my ($year, $month, $day) = split '-' , shift;
   return timelocal(0 , 0 , 12, $day , $month - 1, $year);
}
__END__
The difference is 56 months

[download]
Of course, it is possible to change the definition of what a "month" is as well as all kinds of cool doodads. You only need to copy the module into the same directory as you are running your code.

Cheers - L~R

In reply to Re: Time::Local - calculate months elapsed by Limbic~Region
in thread Time::Local - calculate months elapsed by Lori713

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.