This should do the trick. Formatting, printing headers, redoing the I/O from the file is left as an excercise. 
use strict;
use Time::Local;

my %track;
while (<DATA>){
  my ($date,$ignoreIDLiteral,$id) = split / - | = /;
  chomp $id;
  my   $time = dateconv($date);
  my $prevtime = $track{$id}{TIME};
  $track{$id}{TIME}=$time; 
  $track{$id}{DATE}=$date;
  $track{$id}{COUNT}++;
  print "$id\t$date\t$track{$id}{COUNT}\n"
      if $prevtime and $time - $prevtime > 3600;

}

sub dateconv{
  my $d = shift;
  my %month = qw[jan 1 feb 2 mar 3 apr 4 may 5 jun 6 jul 7 
                 aug 8 sep 9 oct 10 nov 11 dec 12];
  my @p = $d=~/(\d+)-(\w+)-(\d+)\s(\d+):(\d+):(\d+)/;
  $p[1]=$month{ lc $p[1]  } - 1;
  return  timelocal(@p[5,4,3,2,1,0]);
 
     #timelocal($sec,$min,$hour,$mday,$mon,$year);
}
__DATA__
2007-Nov-07 00:00:00 - id = 000000001
2007-Nov-07 00:30:01 - id = 000000002
2007-Nov-07 00:40:00 - id = 000000003
2007-Nov-07 01:20:01 - id = 000000001

[download]
prints:
000000001	2007-Nov-07 01:20:01	2

     "As you get older three things happen. The first is your memory goes, and I can't remember the other two... " - Sir Norman Wisdom

In reply to Re: Comparing Dates and Reoccurance by NetWallah
in thread Comparing Dates and Reoccurance by tuakilan

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