# 100th meridian east

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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.
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 |