The meridian 129° east of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Asia, Australia, the Indian Ocean, the Southern Ocean, and Antarctica to the South Pole.
In Australia, the meridian defines the eastern border of Western Australia, and the western borders of the Northern Territory and South Australia. The border of Western Australia meets the Northern Territory border and South Australian border at the 26th parallel south, at what is known as Surveyor Generals Corner.
From Pole to Pole
- Porter, John (April 1990). AN HISTORICAL PERSPECTIVE - Longitude 129 degrees east, and why it is not the longest, straight line in the world. National Perspectives: 32nd Australian Surveyors Congress Technical Papers 31 March - 6 April 1990. Canberra: The Institution: Eyepiece - Official Organ of The Institution of Surveyors, Australia, W.A. Division. pp. 18–24. Porter.
- Darby, Andrew (22 December 2003). "Canberra all at sea over position of Southern Ocean". The Age. Retrieved 13 January 2013.
- "Indian Ocean". Encyclopædia Britannica. Retrieved 13 January 2013.