90th meridian east

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Line across the Earth
90th meridian east

The meridian 90° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole.

It is the border between two tropical cyclone basins: the Australian region, and the Southwest Indian Ocean basin.[citation needed]

The Ninety East Ridge is named after the meridian.

The 90th meridian east forms a great circle with the 90th meridian west.

This meridian is halfway between the Prime meridian and the 180th meridian and the center of the Eastern Hemisphere is on this meridian.

From Pole to Pole

Starting at the North Pole and heading south to the South Pole, the 90th meridian east passes through:

Co-ordinates Country, territory or sea Notes
90°0′N 90°0′E / 90.000°N 90.000°E / 90.000; 90.000 (Arctic Ocean) Arctic Ocean
81°9′N 90°0′E / 81.150°N 90.000°E / 81.150; 90.000 (Kara Sea) Kara Sea Passing just west of Schmidt Island, Krasnoyarsk Krai,  Russia
77°7′N 90°0′E / 77.117°N 90.000°E / 77.117; 90.000 (Russia)  Russia Krasnoyarsk KraiKirov Islands
77°6′N 90°0′E / 77.100°N 90.000°E / 77.100; 90.000 (Kara Sea) Kara Sea
75°33′N 90°0′E / 75.550°N 90.000°E / 75.550; 90.000 (Russia)  Russia Krasnoyarsk Krai
Republic of Khakassia — from 55°8′N 90°0′E / 55.133°N 90.000°E / 55.133; 90.000 (Khakassia)
Tuva Republic — from 51°40′N 90°0′E / 51.667°N 90.000°E / 51.667; 90.000 (Tuva Republic)
50°1′N 90°0′E / 50.017°N 90.000°E / 50.017; 90.000 (Mongolia)  Mongolia Bayan-Ölgii Province
47°53′N 90°0′E / 47.883°N 90.000°E / 47.883; 90.000 (China)  People's Republic of China Xinjiang
Qinghai — from 36°10′N 90°0′E / 36.167°N 90.000°E / 36.167; 90.000 (Qinghai)
Tibet — from 33°42′N 90°0′E / 33.700°N 90.000°E / 33.700; 90.000 (Tibet)
28°19′N 90°0′E / 28.317°N 90.000°E / 28.317; 90.000 (Bhutan)  Bhutan
26°44′N 90°0′E / 26.733°N 90.000°E / 26.733; 90.000 (India)  India Assam
Meghalaya — from 25°50′N 90°0′E / 25.833°N 90.000°E / 25.833; 90.000 (West Bengal)
25°16′N 90°0′E / 25.267°N 90.000°E / 25.267; 90.000 (Bangladesh)  Bangladesh
21°59′N 90°0′E / 21.983°N 90.000°E / 21.983; 90.000 (Indian Ocean) Indian Ocean
60°0′S 90°0′E / 60.000°S 90.000°E / -60.000; 90.000 (Southern Ocean) Southern Ocean
66°46′S 90°0′E / 66.767°S 90.000°E / -66.767; 90.000 (Antarctica) Antarctica Kaiser Wilhelm II Land, Australian Antarctic Territory, claimed by  Australia

Preceded by
89th meridian east
90th meridian east

forms a great circle with

90th meridian west

Succeeded by
91st meridian east
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