@array = (
  [ '03:30', '05:45' ],
  [ '05:45', '09:15' ],
  [ '10:00', '11:35' ],
  [ '11:00', '15:40' ]
);

##</code><code>##

(
  [ '00:00', '03:30' ],
  [ '09:15', '10:00' ],
  [ '15:40', '24:00' ]
);