100th meridian east

The meridian 100° 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.

100°

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100th meridian east (interactive map)

The 100th meridian east forms a great circle with the 80th meridian west.

From Pole to Pole

Starting at the North Pole and heading south to the South Pole, the 100th meridian east passes through:

Co-ordinates	Country, territory or sea	Notes
90°0′N 100°0′E / 90.000°N 100.000°E / 90.000; 100.000 (Arctic Ocean)	Arctic Ocean
80°39′N 100°0′E / 80.650°N 100.000°E / 80.650; 100.000 (Laptev Sea)	Laptev Sea
79°51′N 100°0′E / 79.850°N 100.000°E / 79.850; 100.000 (Russia)	Russia	Krasnoyarsk Krai — October Revolution Island, Severnaya Zemlya
78°55′N 100°0′E / 78.917°N 100.000°E / 78.917; 100.000 (Kara Sea)	Kara Sea
78°16′N 100°0′E / 78.267°N 100.000°E / 78.267; 100.000 (Russia)	Russia	Krasnoyarsk Krai — Bolshevik Island, Severnaya Zemlya
77°57′N 100°0′E / 77.950°N 100.000°E / 77.950; 100.000 (Kara Sea)	Kara Sea
76°27′N 100°0′E / 76.450°N 100.000°E / 76.450; 100.000 (Russia)	Russia	Krasnoyarsk Krai Irkutsk Oblast — from 58°4′N 100°0′E / 58.067°N 100.000°E / 58.067; 100.000 (Irkutsk Oblast) Republic of Buryatia — from 53°19′N 100°0′E / 53.317°N 100.000°E / 53.317; 100.000 (Buryatia)
51°45′N 100°0′E / 51.750°N 100.000°E / 51.750; 100.000 (Mongolia)	Mongolia
42°39′N 100°0′E / 42.650°N 100.000°E / 42.650; 100.000 (China)	People's Republic of China	Inner Mongolia Gansu — from 40°55′N 100°0′E / 40.917°N 100.000°E / 40.917; 100.000 (Gansu) Inner Mongolia — from 40°17′N 100°0′E / 40.283°N 100.000°E / 40.283; 100.000 (Inner Mongolia) Gansu — from 39°45′N 100°0′E / 39.750°N 100.000°E / 39.750; 100.000 (Gansu) Qinghai — from 38°17′N 100°0′E / 38.283°N 100.000°E / 38.283; 100.000 (Qinghai) Sichuan — from 32°56′N 100°0′E / 32.933°N 100.000°E / 32.933; 100.000 (Gansu) Yunnan — from 28°32′N 100°0′E / 28.533°N 100.000°E / 28.533; 100.000 (Yunnan)
21°42′N 100°0′E / 21.700°N 100.000°E / 21.700; 100.000 (Myanmar)	Myanmar (Burma)
20°25′N 100°0′E / 20.417°N 100.000°E / 20.417; 100.000 (Thailand)	Thailand
12°50′N 100°0′E / 12.833°N 100.000°E / 12.833; 100.000 (Gulf of Thailand)	Gulf of Thailand
12°13′N 100°0′E / 12.217°N 100.000°E / 12.217; 100.000 (Thailand)	Thailand
12°10′N 100°0′E / 12.167°N 100.000°E / 12.167; 100.000 (Gulf of Thailand)	Gulf of Thailand
9°47′N 100°0′E / 9.783°N 100.000°E / 9.783; 100.000 (Thailand)	Thailand	Islands of Ko Pha Ngan and Ko Samui
9°25′N 100°0′E / 9.417°N 100.000°E / 9.417; 100.000 (Gulf of Thailand)	Gulf of Thailand
8°33′N 100°0′E / 8.550°N 100.000°E / 8.550; 100.000 (Thailand)	Thailand
6°34′N 100°0′E / 6.567°N 100.000°E / 6.567; 100.000 (Strait of Malacca)	Strait of Malacca	Passing just east of the Langkawi islands,  Malaysia (at 6°18′N 99°56′E / 6.300°N 99.933°E / 6.300; 99.933 (Langkawi)) Passing just west of Penang Island,  Malaysia (at 5°26′N 100°10′E / 5.433°N 100.167°E / 5.433; 100.167 (Penang))
2°43′N 100°0′E / 2.717°N 100.000°E / 2.717; 100.000 (Malaysia)	Indonesia	Island of Sumatra
0°29′S 100°0′E / 0.483°S 100.000°E / -0.483; 100.000 (Indian Ocean)	Indian Ocean
2°31′S 100°0′E / 2.517°S 100.000°E / -2.517; 100.000 (Malaysia)	Indonesia	Island of North Pagai
2°51′S 100°0′E / 2.850°S 100.000°E / -2.850; 100.000 (Indian Ocean)	Indian Ocean
60°0′S 100°0′E / 60.000°S 100.000°E / -60.000; 100.000 (Southern Ocean)	Southern Ocean
65°39′S 100°0′E / 65.650°S 100.000°E / -65.650; 100.000 (Antarctica)	Antarctica	Australian Antarctic Territory, claimed by  Australia

Next westward: 99th meridian east

100th meridian east forms a great circle with 80th meridian west

Next eastward: 101st meridian east

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