Antipode of San Francisco, Costa Rica
The opposite side of the world to San Francisco is West Island, Cocos Islands.
San Francisco
Costa Rica
Continent: America
Coordinates: 9.993, -84.129
Antipodal point
Indian Ocean
Exact location on the other side of the world
Coordinates: -9.993, 95.871
West Island
Cocos Islands
West Island is the closest city to San Francisco's antipodal point (261 km).
The antipodal city to San Francisco is West Island. This means that, among all the populated locations in the world, the farthest city from San Francisco is West Island.
The distance from San Francisco to West Island 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 Francisco
This table contains the populated locations that are closest to San Francisco's antipode. These are the farthest cities in the world from San Francisco.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| West Island | Cocos Islands | 261 km | (-12.157, 96.823) |
| Tuapejat, West Sumatra | Indonesia | 972 km | (-2.028, 99.589) |
| Bengkulu | Indonesia | 984 km | (-3.800, 102.266) |
| Ketahun, Bengkulu | Indonesia | 984 km | (-3.390, 101.835) |
| Manna, Bengkulu | Indonesia | 988 km | (-4.465, 102.904) |
| Tais, Bengkulu | Indonesia | 988 km | (-4.075, 102.577) |
| Lais, Bengkulu | Indonesia | 988 km | (-3.529, 102.050) |
| Ipuh, Bengkulu | Indonesia | 991 km | (-3.007, 101.484) |
| Masmambang, Bengkulu | Indonesia | 992 km | (-4.164, 102.700) |
| Masat, Bengkulu | Indonesia | 998 km | (-4.381, 102.954) |
San Francisco, Costa Rica
Local time:
Coordinates: 9.993° N 84.1293° W
West Island, Cocos Islands
Local time:
Coordinates: 12.1568° S 96.8225° 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 San Francisco
The DMS coordinates are: 9°59'34.8'' N 84°7'45.6'' W.
Calculations are easier by using the decimal format, hence:
LatO = 9.99299°
LngO = -84.12934°
Step 2: Calculate the latitude
LatA = - LatO = -9.99299°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -84.12934 + 180° = 95.87066°
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 Francisco is located on coordinates: (LatA, LngA) = (-9.99299, 95.87066)
In DMS format: 9°59'34.8'' N 84°7'45.6'' W.
