Earth Sandwich / City antipodes / Perth
Antipode finder · Australia
The antipode of
Perth.
Draw a straight line from Perth (31.95° S, 115.86° E) through the centre of the Earth and it comes out at 31.95° N, 64.14° W, in the Sargasso Sea, 65 km from the nearest dry land, off the coast of Bermuda. A sloppy Earth sandwich is possible.
- Perth
- 31.95° S, 115.86° E · about 40 m above sea level · 2,384,371 people
- Antipode
- 31.95° N, 64.14° W
- What is there
- The Sargasso Sea; the sea floor there lies about 4,520 m below the surface
- Nearest dry land
- 65 km from the antipode, on the coast of Bermuda
- Nearest town
- Smith's Parish, Bermuda · 69 km from the antipode
- Nearest big city
- Queens · 1,301 km from the antipode
- Sandwich verdict
- SLOPPY dry land within 200 km of the antipode
Can you make an Earth sandwich from Perth?
Nearly: a sloppy-grade Earth sandwich. The antipode of Perth lies in the Sargasso Sea, 65 km from the nearest dry land in Bermuda. Sandwich Law allows a slice within 200 km of the true antipode, and the verifying grid rates Perth sloppy, so bread in Perth and bread near Smith's Parish, Bermuda still count as one sandwich. The elevation bonus depends on the spot chosen for the dry slice.
Perth is on the The US & Canada ↔ the southern Indian Ocean 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.