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.

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:


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! scope="col" width="130" | Co-ordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes ! scope="row" style="background:#b0e0e6;" | Arctic Ocean ! scope="row" style="background:#b0e0e6;" | Laptev Sea ! scope="row" | 🇷🇺 ! scope="row" style="background:#b0e0e6;" | Kara Sea ! scope="row" | 🇷🇺 ! scope="row" style="background:#b0e0e6;" | Kara Sea ! scope="row" | 🇷🇺 ! scope="row" | 🇲🇳 ! scope="row" | ! scope="row" | 🇲🇲 (Burma) ! scope="row" | 🇹🇭 ! scope="row" style="background:#b0e0e6;" | Gulf of Thailand ! scope="row" | 🇹🇭 ! scope="row" style="background:#b0e0e6;" | Gulf of Thailand ! scope="row" | 🇹🇭 ! scope="row" style="background:#b0e0e6;" | Gulf of Thailand ! scope="row" | 🇹🇭 ! scope="row" style="background:#b0e0e6;" | Strait of Malacca ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" | 🇮🇩 ! scope="row" style="background:#b0e0e6;" | Indian Ocean ! scope="row" style="background:#b0e0e6;" | Southern Ocean ! scope="row" | Antarctica
 * style="background:#b0e0e6;" | 90°N, 100°W
 * style="background:#b0e0e6;" | 90°N, 100°W
 * style="background:#b0e0e6;" |
 * style="background:#b0e0e6;" | 80.65°N, 100°W
 * style="background:#b0e0e6;" | 80.65°N, 100°W
 * style="background:#b0e0e6;" |
 * 79.85°N, 100°W
 * 79.85°N, 100°W
 * Krasnoyarsk Krai — October Revolution Island, Severnaya Zemlya
 * style="background:#b0e0e6;" | 78.91667°N, 100°W
 * style="background:#b0e0e6;" | 78.91667°N, 100°W
 * style="background:#b0e0e6;" |
 * 78.26667°N, 100°W
 * 78.26667°N, 100°W
 * Krasnoyarsk Krai — Bolshevik Island, Severnaya Zemlya
 * style="background:#b0e0e6;" | 77.95°N, 100°W
 * style="background:#b0e0e6;" | 77.95°N, 100°W
 * style="background:#b0e0e6;" |
 * -valign="top"
 * 76.45°N, 100°W
 * Krasnoyarsk Krai Irkutsk Oblast — from 58.06667°N, 100°W Republic of Buryatia — from 53.31667°N, 100°W
 * 51.75°N, 100°W
 * 51.75°N, 100°W
 * -valign="top"
 * 42.65°N, 100°W
 * 42.65°N, 100°W
 * Inner Mongolia Gansu — from 40.91667°N, 100°W Inner Mongolia — from 40.28333°N, 100°W Gansu — from 39.75°N, 100°W Qinghai — from 38.28333°N, 100°W Sichuan — from 32.93333°N, 100°W Yunnan — from 28.53333°N, 100°W
 * 21.7°N, 100°W
 * 21.7°N, 100°W
 * 20.41667°N, 100°W
 * 20.41667°N, 100°W
 * 20.41667°N, 100°W
 * style="background:#b0e0e6;" | 12.83333°N, 100°W
 * style="background:#b0e0e6;" | 12.83333°N, 100°W
 * style="background:#b0e0e6;" | 12.83333°N, 100°W
 * style="background:#b0e0e6;" |
 * 12.21667°N, 100°W
 * 12.21667°N, 100°W
 * style="background:#b0e0e6;" | 12.16667°N, 100°W
 * style="background:#b0e0e6;" | 12.16667°N, 100°W
 * style="background:#b0e0e6;" | 12.16667°N, 100°W
 * style="background:#b0e0e6;" |
 * 9.78333°N, 100°W
 * 9.78333°N, 100°W
 * Islands of Ko Pha Ngan and Ko Samui
 * style="background:#b0e0e6;" | 9.41667°N, 100°W
 * style="background:#b0e0e6;" | 9.41667°N, 100°W
 * style="background:#b0e0e6;" |
 * 8.55°N, 100°W
 * 8.55°N, 100°W
 * -valign="top"
 * style="background:#b0e0e6;" | 6.56667°N, 100°W
 * style="background:#b0e0e6;" | 6.56667°N, 100°W
 * style="background:#b0e0e6;" | Passing just east of the Langkawi islands, 🇲🇾 (at 6.3°N, 99.93333°W) Passing just west of Penang Island, 🇲🇾 (at 5.43333°N, 100.16667°W)
 * 2.71667°N, 100°W
 * 2.71667°N, 100°W
 * Island of Sumatra
 * style="background:#b0e0e6;" | -0.48333°N, 100°W
 * style="background:#b0e0e6;" | -0.48333°N, 100°W
 * style="background:#b0e0e6;" |
 * -2.51667°N, 100°W
 * -2.51667°N, 100°W
 * Island of North Pagai
 * style="background:#b0e0e6;" | -2.85°N, 100°W
 * style="background:#b0e0e6;" | -2.85°N, 100°W
 * style="background:#b0e0e6;" |
 * style="background:#b0e0e6;" | -60°N, 100°W
 * style="background:#b0e0e6;" | -60°N, 100°W
 * style="background:#b0e0e6;" |
 * -65.65°N, 100°W
 * -65.65°N, 100°W
 * Australian Antarctic Territory, claimed by 🇦🇺
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