Hello, In order to sort by date you will need to convert that format to one that can be sorted. This is where you may want to use the DateTime suite of modules. Hope this helps 
use strict;
use warnings;
use Datetime;
use DateTime::Format::Strptime;

my $Strp = new DateTime::Format::Strptime( pattern => '%a %d-%b-%y', )
+;
my @dates;
while (<DATA>) {
    chomp;
    my @date_text = split(/\|/);

    push( @dates, $Strp->parse_datetime( $date_text[-1] ) );
}
my @sorted_dates = sort @dates;
print map { "$_\n" } @sorted_dates;

__DATA__
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sat 09-DEC-06|
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sat 09-JUN-07|
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sat 10-FEB-07|
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sat 14-APR-07|
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sat 28-OCT-06|
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sun 10-DEC-06|
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sun 10-JUN-07|
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sun 15-APR-07|
|Puerto Rico||Santiago Apostol Catholic School|Las Croabas Road, Urb S
+anta Isidra|Fajardo|PR||00738|Modesto|Garcia|Counselor|787/863-0524|7
+87/863-6655|Sun 29-OCT-06|

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In reply to Re: How to re-order badly formed dates within a delimited string? by monsterzero
in thread How to re-order badly formed dates within a delimited string? by hmbscully

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