Antipode of Porto Alegre, Sao Tome and Principe
The opposite side of the world to Porto Alegre is Atafu Village, Atafu, Tokelau.
Porto Alegre
Sao Tome and Principe
Continent: Africa
Coordinates: 0.034, 6.534
Antipodal point
South Pacific Ocean
Exact location on the other side of the world
Coordinates: -0.034, -173.466
Atafu Village
Tokelau
Atafu Village is the closest city to Porto Alegre's antipodal point (947 km).
The antipodal city to Porto Alegre is Atafu Village. This means that, among all the populated locations in the world, the farthest city from Porto Alegre is Atafu Village.
The distance from Porto Alegre to Atafu Village is about 19,000 kilometers. A direct flight would take around 21 hours, but there aren't commercial routes between these cities.
Cities on the other side of the world of Porto Alegre
This table contains the populated locations that are closest to Porto Alegre's antipode. These are the farthest cities in the world from Porto Alegre.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| Atafu Village, Atafu | Tokelau | 947 km | (-8.542, -172.516) |
| Nukunonu | Tokelau | 1,029 km | (-9.200, -171.848) |
| Fale old settlement, Fakaofo | Tokelau | 1,063 km | (-9.385, -171.247) |
| Roreti Village, Gilbert Islands | Kiribati | 1,118 km | (-2.655, 176.833) |
| Rungata, Gilbert Islands | Kiribati | 1,133 km | (-1.342, 176.436) |
| Motufoua School, Vaitupu | Tuvalu | 1,199 km | (-7.490, 178.693) |
| Asau Village, Vaitupu | Tuvalu | 1,200 km | (-7.490, 178.680) |
| Bakaka Village, Gilbert Islands | Kiribati | 1,206 km | (-2.500, 175.980) |
| Kulia Village, Niutao | Tuvalu | 1,223 km | (-6.108, 177.334) |
| Teone Village, Funafuti | Tuvalu | 1,240 km | (-8.499, 179.195) |
Local time:
Time Zone: Africa/Sao_Tome
Coordinates: 0.0345° N 6.534° E
Elevation: 338 m (1,109 ft)
Local time:
Time Zone: Pacific/Fakaofo
Coordinates: 8.5421° S 172.5159° W
Elevation: 10 m (33 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 Porto Alegre
The DMS coordinates are: 0°2'4.2'' N 6°32'2.5'' E .
Calculations are easier by using the decimal format, hence:
LatO = 0.03449°
LngO = 6.53404°
Step 2: Calculate the latitude
LatA = - LatO = -0.03449°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = 6.53404 - 180° = -173.46596°
Since the longitude is positive, we subtract 180° to ensure the final value lies between (-180, 180). If it were the other way around, we would sum 180° for the same reason.
Result:
The antipode of Porto Alegre is located on coordinates: (LatA, LngA) = (-0.03449, -173.46596)
In DMS format: 0°2'4.2'' N 6°32'2.5'' E .