sometimes, the start time will cross midnight
But the dates you've used are on three different days! change the last date to the 9th and you get a very reasonable average of 1:00. 
use Date::Calc qw(Date_to_Time);
use POSIX;

my $time1 = Date_to_Time(2007,8,8,23,00,0);
my $time2 = Date_to_Time(2007,8,9,03,00,0);
my $time3 = Date_to_Time(2007,8,9,01,00,0);

print "$time1\t$time2\t$time3\n";

my $avg = sprintf "%0.0f", (($time1+$time2+$time3)/3);
print "$avg\n";

print strftime "%H:%M:%S\n", gmtime($avg);
__END__
1186614000      1186628400      1186621200
1186621200
01:00:00

[download]

In reply to Re: Getting avg start time by FunkyMonk
in thread Getting avg start time by Earindil

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.