For the first hour ( UTC 10:00 -10:59 ) , this is true for both inhabited and uninhabited territories , but during the second hour ( UTC 11:00 -11:59 ) it is only true in an uninhabited maritime time zone twelve hours behind UTC ( UTC-12 ) .
For the first hour ( UTC 10:00 -10:59 ) , this phenomenon affects inhabited territories , whereas during the second hour ( UTC 11:00 -11:59 ) it only affects an uninhabited maritime time zone twelve hours behind UTC .