Antipode of Neiafu, Tonga
The opposite side of the world to Neiafu is In Guezzam, Algeria.
Neiafu
Tonga
Continent: Oceania
Coordinates: -18.651, -173.984
Antipodal point
Niger
Continent: Africa
Coordinates: 18.651, 6.016
In Guezzam
Algeria
In Guezzam is the closest city to Neiafu's antipodal point (105 km).
The antipodal city to Neiafu is In Guezzam. This means that, among all the populated locations in the world, the farthest city from Neiafu is In Guezzam.
The distance from Neiafu to In Guezzam 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 Neiafu
This table contains the populated locations that are closest to Neiafu's antipode. These are the farthest cities in the world from Neiafu.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| In Guezzam | Algeria | 105 km | (19.574, 5.768) |
| Arlit, Agadez | Niger | 145 km | (18.737, 7.385) |
| Tassara, Tahoua Region | Niger | 208 km | (16.805, 5.644) |
| I-n-Gall, Agadez | Niger | 228 km | (16.788, 6.934) |
| Tchirozérine, Agadez | Niger | 243 km | (17.221, 7.761) |
| Iferouâne, Agadez | Niger | 257 km | (19.063, 8.420) |
| Alaghsas, Agadez | Niger | 279 km | (17.019, 8.017) |
| Agadez | Niger | 280 km | (16.973, 7.991) |
| Tchin Tabaradèn, Tahoua Region | Niger | 306 km | (15.897, 5.799) |
| Tillia, Tahoua Region | Niger | 309 km | (16.123, 4.790) |
Local time:
Time Zone: Pacific/Tongatapu
Coordinates: 18.6514° S 173.9835° W
Elevation: 1 m (3 ft)
Local time:
Time Zone: Africa/Algiers
Coordinates: 19.5736° N 5.7681° E
Elevation: 399 m (1,309 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 Neiafu
The DMS coordinates are: 18°39'5.2'' S 173°59'0.7'' W.
Calculations are easier by using the decimal format, hence:
LatO = -18.65144°
LngO = -173.98354°
Step 2: Calculate the latitude
LatA = - LatO = 18.65144°
Since the latitude is negative (south direction), the antipode must be positive (north direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -173.98354 + 180° = 6.01646°
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 Neiafu is located on coordinates: (LatA, LngA) = (18.65144, 6.01646)
In DMS format: 18°39'5.2'' S 173°59'0.7'' W.