Northern Norway uses Central European Time (CET), which is the same thing as UTC +1 and +2, depending on the time of year. This means that if it is 23:00 CET (11 p.m.) during your expedition cruise to Northern Norway, it would be 17:00 (5 p.m.) in New York City, USA, 22:00 (10 p.m.) in London, U.K. and 10:00 (10 a.m.) the next morning in the Antarctic South Pole.