Earth Sandwich / City antipodes / Port Harcourt
Antipode finder · Nigeria
The antipode of
Port Harcourt.
Draw a straight line from Port Harcourt (4.78° N, 7.01° E) through the centre of the Earth and it comes out at 4.78° S, 172.99° W, in the South Pacific Ocean, 89 km from the nearest dry land, off the coast of Kiribati. A sloppy Earth sandwich is possible.
- Port Harcourt
- 4.78° N, 7.01° E · about 40 m above sea level · 2,120,000 people
- Antipode
- 4.78° S, 172.99° W
- What is there
- The South Pacific Ocean; the sea floor there lies about 5,400 m below the surface
- Nearest dry land
- 89 km from the antipode, on the coast of Kiribati
- Nearest town
- Atafu Village, Tokelau · 422 km from the antipode
- Nearest big city
- Auckland · 3,778 km from the antipode
- Sandwich verdict
- SLOPPY dry land within 200 km of the antipode
Can you make an Earth sandwich from Port Harcourt?
Nearly: a sloppy-grade Earth sandwich. The antipode of Port Harcourt lies in the South Pacific Ocean, 89 km from the nearest dry land in Kiribati. Sandwich Law allows a slice within 200 km of the true antipode, and the verifying grid rates Port Harcourt sloppy, so bread in Port Harcourt and bread near Atafu Village, Tokelau still count as one sandwich. The elevation bonus depends on the spot chosen for the dry slice.
Port Harcourt is on the The South Pacific ↔ the Sahara & Sahel 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.