 The vast majority of the population in Norway lives to the west of the 15°E longitude.The IANA time zone database contains one zone for the area with ISO 3166-1 alpha-2 code NO (Norway) in the file zone.tab, where it is named "Europe/Oslo".Svalbard is covered by the zone Arctic/Longyearbyen, while Jan Mayen is covered by Atlantic/Jan Mayen.