Your program works exactly as expected, I didn't change anything except for the initalization to test your code:

#!/usr/bin/perl
use warnings;
use strict;

my %Date_Time = (
 "05-12-2008" =>{ 0  => { 5 => {9 => 1}}} ,   
 "03-12-2008" =>{ 2  => { 8 => {5 => 1}}} ,   
 "04-12-2008" =>{ 0  => { 5 => {8 => 1}}} 
);   

#$dateOut = "$oDay".'-'."$oMon".'-'."$oYear";
#print"Date out => $dateOut\n";                            
#$Date_Time{$dateOut}{$dSec}{$dMin}{$dHour} = 1;

#Retrieving the hash array output
foreach my $date ( sort keys %Date_Time ) {
        #print"Date=> $date\n";
        foreach my $sec (sort keys %{$Date_Time{$date}}) {
            #print"Seconds=> $sec\n";
            foreach my $minute (sort keys %{$Date_Time{$date}{$sec}}) 
+{
                #print"Minute=> $minute\n";
                foreach my $ hour (sort keys %{$Date_Time{$date}{$sec}
+{$minute}}) {            

                    print"Date=>[$date] --> [$hour]:[$minute]:[$sec]\n
+";
                    

                }
            }
        }
    }

output:
Date=>[03-12-2008] --> [5]:[8]:[2]
Date=>[04-12-2008] --> [8]:[5]:[0]
Date=>[05-12-2008] --> [9]:[5]:[0]

[download]

In reply to Re: Sort Hash array using date by jethro
in thread Sort Hash array using date by madtoperl

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.