How about 
#!perl

use strict;
use warnings;

use Date::Calc qw(:all);

sub parseTime {
   # gets years to mins from call, 0 for seconds added
   Mktime(($_[0] =~ /^(\d{4})(\d{2})(\d{2}) (\d{2}):(\d{2})$/), 0);
}

sub rearrangeTime {
   my ($in, $secs, $mins, $hours, $days, $months, $years) = (shift);
   $secs   = $in % 60; $in    = int($in / 60);
   $mins   = $in % 60; $in    = int($in / 60);
   $hours  = $in % 24; $in    = int($in / 24);
   $days   = $in % 30; $in    = int($in / 30); # EVERY month has 30 da
+ys :)
   $months = $in % 12; $years = int($in / 12);
   return "$days:$hours:$mins";
}

my @dates = ('20030822 15:13', '20030824 14:12');
@dates = map { parseTime $_ } @dates;
my $diff = $dates[1] - $dates[0];
$diff = int($diff/2);
print $diff;
print $/;
print rearrangeTime $diff;

[download]
I would consider that a not-too-difficult approach. But in the end, it all depends on you anyways ;-).
Cheers, CombatSquirrel.

In reply to Re: Calculating the average time taken.. by CombatSquirrel
in thread Calculating the average time taken.. by meetn2veg

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.