In other places, however, the IDL deviates east or west away from that meridian. Aleutian Islands (Attu Island being the westernmost) and the Commander Islands, which belong to Russia. Thus, all of Russia is to the west of the IDL, and all of the United States is to the east except for the insular areas of Guam, the Northern Mariana Islands, and Wake Island.These various deviations generally accommodate the political and/or economic affiliations of the affected areas. The IDL remains on the 180° meridian until passing the equator.
Around the June solstice, the first area would be anyplace within the Kamchatka Time Zone (UTC ) that is far enough north to experience midnight sun on the given date.
Kiribati's easternmost islands, the southern Line Islands south of Hawaii, have the most advanced time on Earth, UTC hours.
South of Kiribati, the IDL returns westwards but remains east of 180°, passing between Samoa and American Samoa.
(See § Cartographic practice and convention below.) A person who goes around the world from east to west (the same direction as Magellan's voyage) would gain or set their clock back one hour for every 15° of longitude crossed, and would gain 24 hours for one circuit of the globe from east to west if they did not compensate by setting their clock forward one day when they crossed the IDL.
Conversely, a west-to-east circumnavigation of the globe loses an hour for every 15° of longitude crossed but gains back a day when crossing the IDL.
Proceeding from north to south, the first deviation of the IDL from 180° is to pass to the east of Wrangel Island and the Chukchi Peninsula, the easternmost part of Russian Siberia. Two US-owned uninhabited atolls, Howland Island and Baker Island, just north of the equator in the central Pacific Ocean (and ships at sea between 172.5°W and 180°), have the latest time on Earth (UTC− hours).
(Wrangel Island lies directly on the meridian at 71°32′N 180°0′E, also noted as 71°32′N 180°0′W.) It then bends considerably west of 180°, passing west of St. The IDL circumscribes Kiribati by swinging far to the east, almost reaching the 150°W meridian.
American Samoa, the Cook Islands, Niue, and French Polynesia are east of the IDL and one day behind. It follows that meridian until reaching Antarctica, which has multiple time zones.
Conventionally, the IDL is not drawn into Antarctica on most maps.
During the second hour (UTC –) one of the calendar dates is limited to an uninhabited maritime time zone twelve hours behind UTC (UTC−).
According to the clock, the first areas to experience a new day and a New Year are islands that use UTC .
These national zones do not extend into international waters.