use Date::Manip: 
my $date = UnixDate( ParseDate($thingy), '%Y-%m-%d' );

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In reply to Re: How do I convert date format between 'DD-MM-YYYY' and 'YYYY-MM-DD' back & forth? by jettero
in thread How do I convert date format between 'DD-MM-YYYY' and 'YYYY-MM-DD' back & forth? by naikonta

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