Earth Sandwich / City antipodes / Hangzhou
Antipode finder · China
The antipode of
Hangzhou.
Draw a straight line from Hangzhou (30.29° N, 120.16° E) through the centre of the Earth and it comes out at 30.29° S, 59.84° W, on dry land in Argentina, 33 km from San Javier. An exact Earth sandwich is possible.
- Hangzhou
- 30.29° N, 120.16° E · about 40 m above sea level · 9,236,032 people
- Antipode
- 30.29° S, 59.84° W
- What is there
- Dry land in Argentina
- Nearest town
- San Javier, Argentina · 33 km from the antipode
- Nearest big city
- Córdoba · 433 km from the antipode
- Sandwich verdict
- EXACT land lies opposite land
- Elevation bonus
- +80 m (40 m here, 40 m there)
Can you make an Earth sandwich from Hangzhou?
Yes: an exact Earth sandwich. Hangzhou 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 Hangzhou and have a friend put one down 33 km from San Javier, Argentina at the same UTC minute, and the whole planet is the filling. The elevation bonus would be about 80 m: Hangzhou sits about 40 m above sea level and the other slice about 40 m above sea level.
Hangzhou 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.