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°

100th meridian east

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	Arctic Ocean
80°39′N 100°0′E	Laptev Sea
79°51′N 100°0′E	Russia	Krasnoyarsk Krai — October Revolution Island, Severnaya Zemlya
78°55′N 100°0′E	Kara Sea
78°16′N 100°0′E	Russia	Krasnoyarsk Krai — Bolshevik Island, Severnaya Zemlya
77°57′N 100°0′E	Kara Sea
76°27′N 100°0′E	Russia	Krasnoyarsk Krai Irkutsk Oblast — from 58°4′N 100°0′E Republic of Buryatia — from 53°19′N 100°0′E
51°45′N 100°0′E	Mongolia
42°39′N 100°0′E	People's Republic of China	Inner Mongolia Gansu — from 40°55′N 100°0′E Inner Mongolia — from 40°17′N 100°0′E Gansu — from 39°45′N 100°0′E Qinghai — from 38°17′N 100°0′E Sichuan — from 32°56′N 100°0′E Yunnan — from 28°32′N 100°0′E
21°42′N 100°0′E	Myanmar (Burma)
20°25′N 100°0′E	Thailand
12°50′N 100°0′E	Gulf of Thailand
12°13′N 100°0′E	Thailand
12°10′N 100°0′E	Gulf of Thailand
9°47′N 100°0′E	Thailand	Islands of Ko Pha Ngan and Ko Samui
9°25′N 100°0′E	Gulf of Thailand
8°33′N 100°0′E	Thailand
6°34′N 100°0′E	Strait of Malacca	Passing just east of the Langkawi islands,  Malaysia (at 6°18′N 99°56′E) Passing just west of Penang Island,  Malaysia (at 5°26′N 100°10′E)
2°43′N 100°0′E	Indonesia	Island of Sumatra
0°29′S 100°0′E	Indian Ocean
2°31′S 100°0′E	Indonesia	Island of North Pagai
2°51′S 100°0′E	Indian Ocean
60°0′S 100°0′E	Southern Ocean
65°39′S 100°0′E	Antarctica	Australian Antarctic Territory, claimed by  Australia

Preceded by 99th meridian east

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

Succeeded by 101st meridian east