DateTimeImmutable('2018-12-01' . ' ' . '09:00'), new DateTimeImmutable('2018-12-02' . ' ' . '18:00') ), false, 'Full Stack Conference', [ [ 'date' => '2018-12-02', 'startTime' => '15:15', 'endTime' => '16:00', 'title' => 'Technically DDD', 'room' => 'Track A', ], [ 'date' => '2018-12-02', 'startTime' => '16:00', 'endTime' => '16:45', 'title' => 'Turning Grey Hairs to Your Advantage', 'room' => 'Track C', ], // ..