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: