Earth Sandwich / City antipodes / Hiroshima
Antipode finder · Japan
The antipode of
Hiroshima.
Draw a straight line from Hiroshima (34.40° N, 132.45° E) through the centre of the Earth and it comes out at 34.40° S, 47.55° W, in the South Atlantic Ocean, 469 km from the nearest dry land, off the coast of Brazil. The other slice of an Earth sandwich would sink.
- Hiroshima
- 34.40° N, 132.45° E · about 120 m above sea level · 1,200,754 people
- Antipode
- 34.40° S, 47.55° W
- What is there
- The South Atlantic Ocean; the sea floor there lies about 4,520 m below the surface
- Nearest dry land
- 469 km from the antipode, on the coast of Brazil
- Nearest town
- Tavares, Brazil · 479 km from the antipode
- Nearest big city
- Porto Alegre · 596 km from the antipode
- Sandwich verdict
- SOGGY the other slice lands in open water
- Nearest exact spot
- 517 km away, 33 km from Ponggae-dong, South Korea ⇄ 30 km from Santa Vitória do Palmar, Brazil
Can you make an Earth sandwich from Hiroshima?
No, not from Hiroshima itself. The other slice would land in the South Atlantic Ocean, 469 km from the nearest dry land (Brazil), where the sea floor lies about 4,520 m below the surface. Boats do not count (Sandwich Law § 1.3).
The nearest place from which an exact Earth sandwich is possible is 517 km from Hiroshima, 33 km from Ponggae-dong, South Korea. Its other slice would go down 30 km from Santa Vitória do Palmar, Brazil.
Hiroshima is on the Okinawa & Jeju ↔ southern Brazil 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.