Antipode of Saint John’s, Antigua and Barbuda
The opposite side of the world to Saint John’s is Port Hedland, Western Australia, Australia.
Saint John’s
Antigua and Barbuda
Continent: America
Coordinates: 17.121, -61.843
Antipodal point
Opposite side in the world
Continent: America
Coordinates: -17.121, 118.157
Port Hedland
Australia
Port Hedland is the closest city to Saint John’s's antipodal point (356 km).
The antipodal city to Saint John’s is Port Hedland. This means that, among all the populated locations in the world, the farthest city from Saint John’s is Port Hedland.
The distance from Saint John’s to Port Hedland is about 20,000 kilometers. A direct flight would take around 22 hours, but there aren't commercial routes between these cities.
Cities on the other side of the world of Saint John’s
This table contains the populated locations that are closest to Saint John’s' antipode. These are the farthest cities in the world from Saint John’s.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| Port Hedland, WA | Australia | 356 km | (-20.312, 118.611) |
| South Hedland, WA | Australia | 367 km | (-20.407, 118.601) |
| Wickham, WA | Australia | 408 km | (-20.675, 117.138) |
| Roebourne, WA | Australia | 418 km | (-20.772, 117.146) |
| Lagrange, WA | Australia | 421 km | (-18.682, 121.785) |
| Dampier, WA | Australia | 421 km | (-20.663, 116.713) |
| Bulgarra, WA | Australia | 422 km | (-20.726, 116.857) |
| Karratha, WA | Australia | 423 km | (-20.738, 116.846) |
| Pegs Creek, WA | Australia | 424 km | (-20.738, 116.833) |
| Millars Well, WA | Australia | 425 km | (-20.742, 116.817) |
Saint John’s, Antigua and Barbuda
Local time:
Coordinates: 17.121° N 61.8433° W
Port Hedland, Australia
Local time:
Coordinates: 20.3122° S 118.6106° E
How to calculate the antipodal point?
The antipode can be calculated by understanding the geographic coordinates and applying simple formulas. We will use the following variables:
- LatO: Latitude at the origin point.
- LngO: Longitude at the origin point.
- LatA: Latitude at the antipodal point.
- LngA: Longitude at the antipodal point.
Step 1: Obtain the geographic coordinates of Saint John’s
The DMS coordinates are: 17°7'15.5'' N 61°50'35.8'' W.
Calculations are easier by using the decimal format, hence:
LatO = 17.12096°
LngO = -61.84329°
Step 2: Calculate the latitude
LatA = - LatO = -17.12096°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -61.84329 + 180° = 118.15671°
Since the longitude is negative, we sum 180° to ensure the final value lies between (-180, 180). If it were the other way around, we would subtract 180° for the same reason.
Result:
The antipode of Saint John’s is located on coordinates: (LatA, LngA) = (-17.12096, 118.15671)
In DMS format: 17°7'15.5'' N 61°50'35.8'' W.
