I had a web signup sheet that asked for times a person could start and end working at an event. To fill in the html table, I needed to get an array of times in half hour intervals (inclusive) between the two times. This is how I did it. 
while ($current ne $finish) {
        unless ( $current =~ s/:0/:3/g ) {
                ( $temp, $trash ) = split /:/, $current, 2;
                $temp = ($temp == 12)?1:++$temp;
                $current = $temp . ":00";
        }
        push @values, $current;
}

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In reply to get time array from range by Anonymous Monk

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