Antipode of San Juan, Puerto Rico
The opposite side of the world to San Juan is Onslow, Western Australia, Australia.
San Juan
Puerto Rico
Continent: America
Coordinates: 18.466, -66.106
Antipodal point
Indian Ocean
Exact location on the other side of the world
Coordinates: -18.466, 113.894
Onslow
Australia
Onslow is the closest city to San Juan's antipodal point (373 km).
The antipodal city to San Juan is Onslow. This means that, among all the populated locations in the world, the farthest city from San Juan is Onslow.
The distance from San Juan to Onslow 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 Juan
This table contains the populated locations that are closest to San Juan's antipode. These are the farthest cities in the world from San Juan.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| Onslow, WA | Australia | 373 km | (-21.638, 115.112) |
| Dampier, WA | Australia | 383 km | (-20.663, 116.713) |
| North West Cape, WA | Australia | 383 km | (-21.926, 114.030) |
| Exmouth, WA | Australia | 384 km | (-21.931, 114.121) |
| Nickol, WA | Australia | 395 km | (-20.746, 116.795) |
| Baynton, WA | Australia | 396 km | (-20.752, 116.801) |
| Millars Well, WA | Australia | 397 km | (-20.742, 116.817) |
| Pegs Creek, WA | Australia | 398 km | (-20.738, 116.833) |
| Karratha, WA | Australia | 399 km | (-20.738, 116.846) |
| Bulgarra, WA | Australia | 399 km | (-20.726, 116.857) |
Local time:
Time Zone: America/Puerto_Rico
Coordinates: 18.4663° N 66.1057° W
Elevation: 11 m (36 ft)
Local time:
Time Zone: Australia/Perth
Coordinates: 21.6376° S 115.1122° E
Elevation: 7 m (23 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 Juan
The DMS coordinates are: 18°27'58.8'' N 66°6'20.6'' W.
Calculations are easier by using the decimal format, hence:
LatO = 18.46633°
LngO = -66.10572°
Step 2: Calculate the latitude
LatA = - LatO = -18.46633°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -66.10572 + 180° = 113.89428°
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 Juan is located on coordinates: (LatA, LngA) = (-18.46633, 113.89428)
In DMS format: 18°27'58.8'' N 66°6'20.6'' W.