#!/usr/bin/perl 

use strict;
use warnings;

my @dates = (
    '01-30 22:10',
    '01-12 05:56',
    '01-24 01:42',
    '01-12 05:59',
    '01-31 01:33',
    '01-02 01:33'
);

@dates = sort @dates;    

for (@dates) {
       print $_, "\n";
}