Dates can be compared as strings if they follow the YYYY-MM-DD pattern (compulsory xkcd reference). 
sub mdy2ymd {
    my ($mdy) = @_;
    $mdy =~ /(..)-(..)-(....)/ and return "$3-$1-$2";
}

my @filtered = sort {
  mdy2ymd($a->{Date}) cmp mdy2ymd($b->{Date})
} @$data;

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For longer lists, you might want to use the Schwartzian transform so Perl doesn't have to convert each date several times.

Better yet, store the dates directly in the YYYY-MM-DD format and you can sort them the way you wanted.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re: Get most recent data based on a date from an array of hashes. by choroba
in thread Get most recent data based on a date from an array of hashes. by Anonymous Monk

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