Wouldn't it be easier to just get the time in London? 

use DateTime;
my $dt = DateTime->now( time_zone => 'Europe/London' );
say $dt->strftime('%Y-%m-%d %H:%M:%S');

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In reply to Re^3: How can I add 1 hour to the current time by ikegami
in thread How can I add 1 hour to the current time by sureshrps

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