Antipode of San Antonio, Puerto Rico
The opposite side of the world to San Antonio is North West Cape, Western Australia, Australia.
San Antonio
Puerto Rico
Continent: America
Coordinates: 18.440, -66.931
Antipodal point
Indian Ocean
Exact location on the other side of the world
Coordinates: -18.440, 113.069
North West Cape
Australia
North West Cape is the closest city to San Antonio's antipodal point (399 km).
The antipodal city to San Antonio is North West Cape. This means that, among all the populated locations in the world, the farthest city from San Antonio is North West Cape.
The distance from San Antonio to North West Cape 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 San Antonio
This table contains the populated locations that are closest to San Antonio's antipode. These are the farthest cities in the world from San Antonio.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| North West Cape, WA | Australia | 399 km | (-21.926, 114.030) |
| Exmouth, WA | Australia | 402 km | (-21.931, 114.121) |
| Onslow, WA | Australia | 414 km | (-21.638, 115.112) |
| Dampier, WA | Australia | 455 km | (-20.663, 116.713) |
| Nickol, WA | Australia | 467 km | (-20.746, 116.795) |
| Baynton, WA | Australia | 468 km | (-20.752, 116.801) |
| Millars Well, WA | Australia | 469 km | (-20.742, 116.817) |
| Pegs Creek, WA | Australia | 470 km | (-20.738, 116.833) |
| Karratha, WA | Australia | 471 km | (-20.738, 116.846) |
| Bulgarra, WA | Australia | 471 km | (-20.726, 116.857) |
Local time:
Time Zone: America/Puerto_Rico
Coordinates: 18.4396° N 66.9315° W
Elevation: 198 m (650 ft)
Local time:
Time Zone: Australia/Perth
Coordinates: 21.9263° S 114.0295° E
Elevation: 92 m (302 ft)
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 San Antonio
The DMS coordinates are: 18°26'22.6'' N 66°55'53.4'' W.
Calculations are easier by using the decimal format, hence:
LatO = 18.43961°
LngO = -66.93149°
Step 2: Calculate the latitude
LatA = - LatO = -18.43961°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -66.93149 + 180° = 113.06851°
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 San Antonio is located on coordinates: (LatA, LngA) = (-18.43961, 113.06851)
In DMS format: 18°26'22.6'' N 66°55'53.4'' W.