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99th meridian east

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Line across the Earth
99°
99th meridian east

The meridian 99° 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.

The 99th meridian east forms a great circle with the 81st meridian west.

From Pole to Pole

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Starting at the North Pole and heading south to the South Pole, the 99th meridian east passes through:

Co-ordinates Country, territory or sea Notes
90°0′N 99°0′E / 90.000°N 99.000°E / 90.000; 99.000 (Arctic Ocean) Arctic Ocean
80°45′N 99°0′E / 80.750°N 99.000°E / 80.750; 99.000 (Laptev Sea) Laptev Sea
80°3′N 99°0′E / 80.050°N 99.000°E / 80.050; 99.000 (Russia)  Russia Krasnoyarsk KraiOctober Revolution Island, Severnaya Zemlya
78°48′N 99°0′E / 78.800°N 99.000°E / 78.800; 99.000 (Kara Sea) Kara Sea
76°30′N 99°0′E / 76.500°N 99.000°E / 76.500; 99.000 (Russia)  Russia Krasnoyarsk Krai
Irkutsk Oblast — from 57°44′N 99°0′E / 57.733°N 99.000°E / 57.733; 99.000 (Irkutsk Oblast)
Tuva Republic — from 53°7′N 99°0′E / 53.117°N 99.000°E / 53.117; 99.000 (Tuva Republic)
Republic of Buryatia — from 52°55′N 99°0′E / 52.917°N 99.000°E / 52.917; 99.000 (Buryatia)
52°7′N 99°0′E / 52.117°N 99.000°E / 52.117; 99.000 (Mongolia)  Mongolia
42°36′N 99°0′E / 42.600°N 99.000°E / 42.600; 99.000 (China)  People's Republic of China Inner Mongolia
Gansu — from 40°47′N 99°0′E / 40.783°N 99.000°E / 40.783; 99.000 (Gansu)
Qinghai — from 38°57′N 99°0′E / 38.950°N 99.000°E / 38.950; 99.000 (Qinghai)
Sichuan — from 33°5′N 99°0′E / 33.083°N 99.000°E / 33.083; 99.000 (Sichuan)
Tibet — from 30°9′N 99°0′E / 30.150°N 99.000°E / 30.150; 99.000 (Tibet)
Sichuan — for about 9 km from 29°47′N 99°0′E / 29.783°N 99.000°E / 29.783; 99.000 (Sichuan)
Tibet — from 29°38′N 99°0′E / 29.633°N 99.000°E / 29.633; 99.000 (Tibet)
Yunnan — for about 12 km from 29°12′N 99°0′E / 29.200°N 99.000°E / 29.200; 99.000 (Yunnan)
Tibet — for about 7 km from 29°6′N 99°0′E / 29.100°N 99.000°E / 29.100; 99.000 (Tibet)
Yunnan — from 29°1′N 99°0′E / 29.017°N 99.000°E / 29.017; 99.000 (Yunnan)
23°10′N 99°0′E / 23.167°N 99.000°E / 23.167; 99.000 (Myanmar)  Myanmar (Burma)
19°46′N 99°0′E / 19.767°N 99.000°E / 19.767; 99.000 (Thailand)  Thailand Passing through Chiang Mai at around 18°48'N
14°1′N 99°0′E / 14.017°N 99.000°E / 14.017; 99.000 (Myanmar)  Myanmar (Burma)
10°50′N 99°0′E / 10.833°N 99.000°E / 10.833; 99.000 (Thailand)  Thailand
7°53′N 99°0′E / 7.883°N 99.000°E / 7.883; 99.000 (Strait of Malacca) Strait of Malacca Passing just west of Ko Lanta Yai island,  Thailand (at 7°38′N 99°1′E / 7.633°N 99.017°E / 7.633; 99.017 (Ko Lanta Yai))
Passing just west of Ko Rawi island,  Thailand (at 6°32′N 99°10′E / 6.533°N 99.167°E / 6.533; 99.167 (Ko Rawi))
3°39′N 99°0′E / 3.650°N 99.000°E / 3.650; 99.000 (Indonesia)  Indonesia Island of Sumatra
0°49′N 99°0′E / 0.817°N 99.000°E / 0.817; 99.000 (Indian Ocean) Indian Ocean Passing just east of the island of Pini,  Indonesia (at 0°6′N 98°51′E / 0.100°N 98.850°E / 0.100; 98.850 (Pini))
1°10′S 99°0′E / 1.167°S 99.000°E / -1.167; 99.000 (Indonesia)  Indonesia Island of Siberut
1°46′S 99°0′E / 1.767°S 99.000°E / -1.767; 99.000 (Indian Ocean) Indian Ocean
60°0′S 99°0′E / 60.000°S 99.000°E / -60.000; 99.000 (Southern Ocean) Southern Ocean
65°47′S 99°0′E / 65.783°S 99.000°E / -65.783; 99.000 (Antarctica) Antarctica Australian Antarctic Territory, claimed by  Australia

References

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


Next westward:
98th meridian east
99th meridian east
forms a great circle with
81st meridian west
Next eastward:
100th meridian east