Antipode of Sili, Samoa
The opposite side of the world to Sili is Mayahi, Maradi Region, Niger.
Sili
Samoa
Continent: Oceania
Coordinates: -13.756, -172.377
Antipodal point
Niger
Continent: Africa
Coordinates: 13.756, 7.623
Mayahi
Niger
Mayahi is the closest city to Sili's antipodal point (23 km).
The antipodal city to Sili is Mayahi. This means that, among all the populated locations in the world, the farthest city from Sili is Mayahi.
The distance from Sili to Mayahi 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 Sili
This table contains the populated locations that are closest to Sili's antipode. These are the farthest cities in the world from Sili.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| Mayahi, Maradi Region | Niger | 23 km | (13.955, 7.671) |
| Aguié, Maradi Region | Niger | 32 km | (13.506, 7.779) |
| Tessaoua, Maradi Region | Niger | 39 km | (13.757, 7.987) |
| Gazaoua, Maradi Region | Niger | 41 km | (13.526, 7.914) |
| Dankama, Katsina State | Nigeria | 54 km | (13.298, 7.795) |
| Maradi, Maradi Region | Niger | 63 km | (13.500, 7.102) |
| Tibiri, Maradi Region | Niger | 66 km | (13.563, 7.048) |
| Madarounfa, Maradi Region | Niger | 71 km | (13.309, 7.156) |
| Kaita, Katsina State | Nigeria | 76 km | (13.083, 7.741) |
| Katsina, Katsina State | Nigeria | 85 km | (12.991, 7.602) |
Local time:
Time Zone: Pacific/Apia
Coordinates: 13.756° S 172.3773° W
Elevation: 35 m (115 ft)
Local time:
Time Zone: Africa/Niamey
Coordinates: 13.9553° N 7.6712° E
Elevation: 389 m (1,276 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 Sili
The DMS coordinates are: 13°45'21.7'' S 172°22'38.4'' W.
Calculations are easier by using the decimal format, hence:
LatO = -13.75602°
LngO = -172.37733°
Step 2: Calculate the latitude
LatA = - LatO = 13.75602°
Since the latitude is negative (south direction), the antipode must be positive (north direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -172.37733 + 180° = 7.62267°
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 Sili is located on coordinates: (LatA, LngA) = (13.75602, 7.62267)
In DMS format: 13°45'21.7'' S 172°22'38.4'' W.