Earth Sandwich / City antipodes / Datong
Antipode finder · China
The antipode of
Datong.
Draw a straight line from Datong (40.09° N, 113.29° E) through the centre of the Earth and it comes out at 40.09° S, 66.71° W, on dry land in Argentina, 66 km from Ministro Ramos Mexía. An exact Earth sandwich is possible.
- Datong
- 40.09° N, 113.29° E · about 1,080 m above sea level · 1,850,000 people
- Antipode
- 40.09° S, 66.71° W
- What is there
- Dry land in Argentina
- Nearest town
- Ministro Ramos Mexía, Argentina · 66 km from the antipode
- Nearest big city
- Santiago · 817 km from the antipode
- Sandwich verdict
- EXACT land lies opposite land
- Elevation bonus
- +1,360 m (1,080 m here, 280 m there)
Can you make an Earth sandwich from Datong?
Yes: an exact Earth sandwich. Datong is one of the few large cities with dry land directly opposite it. The grid that verifies submissions rates the spot exact: put a slice down in Datong and have a friend put one down 66 km from Ministro Ramos Mexía, Argentina at the same UTC minute, and the whole planet is the filling. The elevation bonus would be about 1,360 m: Datong sits about 1,080 m above sea level and the other slice about 280 m above sea level.
How this was worked out: the antipode flips the latitude and moves the longitude by 180°. Land or sea comes from the OpenStreetMap coastline the map uses; the sandwich verdict and elevations come from the verifier's 0.2° grid (Natural Earth land, ETOPO 2022 relief); water names from Natural Earth; towns and populations from GeoNames. The city's position is GeoNames' point for it; a big city's suburbs spread tens of kilometres around that point, and the figures move with them. Generated 2026-09-29.