Antipode of Porto Alegre, Brazil
The opposite side of the world to Porto Alegre is Nakanoshima, Kagoshima, Japan.
Porto Alegre
Brazil
Continent: South America
Coordinates: -30.033, -51.230
Antipodal point
Eastern China Sea
Exact location on the other side of the world
Coordinates: 30.033, 128.770
Nakanoshima
Japan
Nakanoshima is the closest city to Porto Alegre's antipodal point (107 km).
The antipodal city to Porto Alegre is Nakanoshima. This means that, among all the populated locations in the world, the farthest city from Porto Alegre is Nakanoshima.
The distance from Porto Alegre to Nakanoshima 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 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 |
|---|---|---|---|
| Nakanoshima, Kagoshima | Japan | 107 km | (29.867, 129.867) |
| Kurio, Kagoshima | Japan | 161 km | (30.271, 130.424) |
| Nagata, Kagoshima | Japan | 164 km | (30.395, 130.425) |
| Yudomari, Kagoshima | Japan | 166 km | (30.235, 130.479) |
| Koshima, Kagoshima | Japan | 172 km | (30.235, 130.535) |
| Miyanoura, Kagoshima | Japan | 179 km | (30.427, 130.572) |
| Koseda, Kagoshima | Japan | 185 km | (30.388, 130.649) |
| Tatsugō, Kagoshima | Japan | 193 km | (28.450, 129.600) |
| Yamatohama, Kagoshima | Japan | 195 km | (28.361, 129.394) |
| Amami, Kagoshima | Japan | 197 km | (28.377, 129.494) |
Local time:
Time Zone: America/Sao_Paulo
Coordinates: 30.0328° S 51.2302° W
Elevation: 46 m (151 ft)
Local time:
Time Zone: Asia/Tokyo
Coordinates: 29.8667° N 129.8667° E
Elevation: 397 m (1,302 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 Porto Alegre
The DMS coordinates are: 30°1'58.2'' S 51°13'48.7'' W.
Calculations are easier by using the decimal format, hence:
LatO = -30.03283°
LngO = -51.23019°
Step 2: Calculate the latitude
LatA = - LatO = 30.03283°
Since the latitude is negative (south direction), the antipode must be positive (north direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -51.23019 + 180° = 128.76981°
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 Porto Alegre is located on coordinates: (LatA, LngA) = (30.03283, 128.76981)
In DMS format: 30°1'58.2'' S 51°13'48.7'' W.