90th meridian east

For the subglacial lake, see 90 Degrees East.

90°

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90th meridian east

The meridian 90° east of Greenwich is a line of longitude ^[1] 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 this meridian's intersection with the Equator.

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′N90°0′E / 90.000°N 90.000°E / 90.000; 90.000 (Arctic Ocean)	Arctic Ocean	Geographic North Pole
81°9′N90°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′N90°0′E / 77.117°N 90.000°E / 77.117; 90.000 (Russia)	Russia	Krasnoyarsk Krai — Kirov Islands
77°6′N90°0′E / 77.100°N 90.000°E / 77.100; 90.000 (Kara Sea)	Kara Sea
75°33′N90°0′E / 75.550°N 90.000°E / 75.550; 90.000 (Russia)	Russia	Krasnoyarsk Krai Republic of Khakassia — from 55°8′N90°0′E / 55.133°N 90.000°E / 55.133; 90.000 (Khakassia) Tuva Republic — from 51°40′N90°0′E / 51.667°N 90.000°E / 51.667; 90.000 (Tuva Republic)
50°1′N90°0′E / 50.017°N 90.000°E / 50.017; 90.000 (Mongolia)	Mongolia	Bayan-Ölgii Province
47°53′N90°0′E / 47.883°N 90.000°E / 47.883; 90.000 (China)	People's Republic of China	Xinjiang Qinghai — from 36°10′N90°0′E / 36.167°N 90.000°E / 36.167; 90.000 (Qinghai) Tibet — from 33°42′N90°0′E / 33.700°N 90.000°E / 33.700; 90.000 (Tibet)
28°19′N90°0′E / 28.317°N 90.000°E / 28.317; 90.000 (Bhutan)	Bhutan
26°44′N90°0′E / 26.733°N 90.000°E / 26.733; 90.000 (India)	India	Assam - passing just east of Dhubri Meghalaya — from 25°50′N90°0′E / 25.833°N 90.000°E / 25.833; 90.000 (West Bengal)
25°16′N90°0′E / 25.267°N 90.000°E / 25.267; 90.000 (Bangladesh)	Bangladesh
21°59′N90°0′E / 21.983°N 90.000°E / 21.983; 90.000 (Indian Ocean)	Indian Ocean
60°0′S90°0′E / 60.000°S 90.000°E / -60.000; 90.000 (Southern Ocean)	Southern Ocean
66°46′S90°0′E / 66.767°S 90.000°E / -66.767; 90.000 (Antarctica)	Antarctica	Kaiser Wilhelm II Land, Australian Antarctic Territory, claimed by   Australia
90°0′S90°0′E / 90.000°S 90.000°E / -90.000; 90.000 (Antarctica)	Antarctica	Geographic South Pole

See also

• 90th meridian west
• 45×90 points

References

1. "What is longitude?". oceanservice.noaa.gov. Retrieved 30 June 2025.

Next westward: 89th meridian east

90th meridian east forms a great circle with 90th meridian west

Next eastward: 91st meridian east