The meridian 150° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America (entirely within the State of Alaska), the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.
In Antarctica, the meridian defines the eastern limit of New Zealand's territorial claim. The land further east is not claimed by any nation except the micronation of Westarctica, which is not recognized by any UN member state.
The Ross Dependency is a region of Antarctica defined by a sector originating at the South Pole, passing along longitudes 160° east to 150° west, and terminating at latitude 60° south. It is claimed by New Zealand, a claim mutually accepted only by Australia, the UK, France and Norway, which are countries that also have territorial claims in Antarctica. Under the 1961 Antarctic Treaty, of which all territorial claimants are signatories, including New Zealand, all claims are held in abeyance. Article IV states: "No acts or activities taking place while the present Treaty is in force shall constitute a basis for asserting, supporting or denying a claim to territorial sovereignty in Antarctica or create any rights of sovereignty in Antarctica".
The Dependency takes its name from Sir James Clark Ross, who discovered the Ross Sea and includes part of Victoria Land, and most of the Ross Ice Shelf. Ross, Balleny, Scott and Roosevelt Islands also form part of the Dependency.
Kiribati, officially the Republic of Kiribati, is an island country in the Micronesia sub-region of Oceania in the central Pacific Ocean. The state comprises 32 atolls and other islands and one remote raised coral island, Banaba. Its total land area is 811 km (313 sq mi) dispersed over 3,441,810 km (1,328,890 sq mi) of ocean. The spread of the country's islands, from Banaba in the west to Kiritimati in the east straddles the equator and the 180th meridian. The International Date Line goes around Kiribati and swings far to the east, almost reaching 150°W. This brings Kiribati's easternmost islands, the southern Line Islands south of Hawaii, into the same day as the Gilbert Islands and places them in the most advanced time zone on Earth: UTC+14.
The permanent population of Kiribati is over 119,000 as of the 2020 census, and more than half live on Tarawa. There is also a significant number of I-Kiribati forming a diaspora, the largest of which still growing via emigration is probably in New Zealand; historically, diasporic communities were created through over-population resettlement in the Solomon Islands on Ghizo and Wagina, and through intermarriage in the United Kingdom and United States. Another country with growing diasporic communities born of recent labour immigration is Australia.
The Hawaii–Aleutian Time Zone observes Hawaii–Aleutian Standard Time (HST) by subtracting ten hours from Coordinated Universal Time (UTC−10:00). The clock time in this zone is based on the mean solar time of the 150th meridian west of the Greenwich Observatory.
The zone takes its name from the two areas it includes: Hawaii and the portion of Alaska's Aleutian Islands west of 169° 30′ W longitude.