Antipode of San Francisco, United States
The opposite side of the world to San Francisco is Port-aux-Français, Kerguelen, French Southern Territories.
San Francisco
United States
Continent: America
Coordinates: 37.775, -122.419
Antipodal point
Opposite side in the world
Continent: America
Coordinates: -37.775, 57.581
Port-aux-Français
French Southern Territories
Port-aux-Français is the closest city to San Francisco' antipodal point (1,637 km).
The antipodal city to San Francisco is Port-aux-Français. This means that, among all the populated locations in the world, the farthest city from San Francisco is Port-aux-Français.
The distance from San Francisco to Port-aux-Français is about 18,000 kilometers. A direct flight would take around 20 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 |
|---|---|---|---|
| Port-aux-Français, Kerguelen | French Southern Territories | 1,637 km | (-49.349, 70.219) |
| Tôlanaro, Anosy | Madagascar | 1,733 km | (-25.032, 46.983) |
| Amboasary, Anosy | Madagascar | 1,766 km | (-25.033, 46.383) |
| Ambovombe, Androy | Madagascar | 1,770 km | (-25.178, 46.087) |
| Tsiombe, Androy | Madagascar | 1,795 km | (-25.300, 45.483) |
| Kopoky, Androy | Madagascar | 1,821 km | (-25.200, 45.200) |
| Tranovaho, Androy | Madagascar | 1,826 km | (-25.300, 44.967) |
| Saint-Joseph, Réunion | Reunion | 1,827 km | (-21.378, 55.617) |
| Saint-Philippe, Réunion | Reunion | 1,828 km | (-21.361, 55.768) |
| Beloha, Androy | Madagascar | 1,833 km | (-25.167, 45.050) |
San Francisco, United States
Local time:
Coordinates: 37.7749° N 122.4194° W
Port-aux-Français, French Southern Territories
Local time:
Coordinates: 49.3492° S 70.2194° 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: 37°46'29.7'' N 122°25'9.9'' W.
Calculations are easier by using the decimal format, hence:
LatO = 37.77493°
LngO = -122.41942°
Step 2: Calculate the latitude
LatA = - LatO = -37.77493°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -122.41942 + 180° = 57.58058°
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) = (-37.77493, 57.58058)
In DMS format: 37°46'29.7'' N 122°25'9.9'' W.
