Earth Sandwich / City antipodes / Changchun
Antipode finder · China
The antipode of
Changchun.
Draw a straight line from Changchun (43.88° N, 125.32° E) through the centre of the Earth and it comes out at 43.88° S, 54.68° W, in the South Atlantic Ocean, 674 km from the nearest dry land, off the coast of Argentina. The other slice of an Earth sandwich would sink.
- Changchun
- 43.88° N, 125.32° E · about 200 m above sea level · 4,714,996 people
- Antipode
- 43.88° S, 54.68° W
- What is there
- The South Atlantic Ocean; the sea floor there lies about 5,480 m below the surface
- Nearest dry land
- 674 km from the antipode, on the coast of Argentina
- Nearest town
- Miramar, Argentina · 677 km from the antipode
- Nearest big city
- Montevideo · 1,007 km from the antipode
- Sandwich verdict
- SOGGY the other slice lands in open water
- Nearest exact spot
- 712 km away, near Shuangtashan, China ⇄ 59 km from Carmen de Patagones, Argentina
Can you make an Earth sandwich from Changchun?
No, not from Changchun itself. The other slice would land in the South Atlantic Ocean, 674 km from the nearest dry land (Argentina), where the sea floor lies about 5,480 m below the surface. Boats do not count (Sandwich Law § 1.3).
The nearest place from which an exact Earth sandwich is possible is 712 km from Changchun, 18 km from Shuangtashan, China. Its other slice would go down 59 km from Carmen de Patagones, Argentina.
Changchun is on the China & Mongolia ↔ Argentina & Chile corridor. Its guide lists where every city on both sides lands and how to make an Earth sandwich there.
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.