Antipode of Grand-Case, Saint Martin
The opposite side of the world to Grand-Case is Dampier, Western Australia, Australia.
Grand-Case
Saint Martin
Continent: America
Coordinates: 18.105, -63.054
Antipodal point
Indian Ocean
Exact location on the other side of the world
Coordinates: -18.105, 116.946
Dampier
Australia
Dampier is the closest city to Grand-Case's antipodal point (284 km).
The antipodal city to Grand-Case is Dampier. This means that, among all the populated locations in the world, the farthest city from Grand-Case is Dampier.
The distance from Grand-Case to Dampier 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 Grand-Case
This table contains the populated locations that are closest to Grand-Case's antipode. These are the farthest cities in the world from Grand-Case.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| Dampier, WA | Australia | 284 km | (-20.663, 116.713) |
| Wickham, WA | Australia | 285 km | (-20.675, 117.138) |
| Bulgarra, WA | Australia | 290 km | (-20.726, 116.857) |
| Karratha, WA | Australia | 292 km | (-20.738, 116.846) |
| Pegs Creek, WA | Australia | 292 km | (-20.738, 116.833) |
| Millars Well, WA | Australia | 292 km | (-20.742, 116.817) |
| Nickol, WA | Australia | 293 km | (-20.746, 116.795) |
| Baynton, WA | Australia | 293 km | (-20.752, 116.801) |
| Karratha Industrial Estate, WA | Australia | 295 km | (-20.772, 116.869) |
| Roebourne, WA | Australia | 296 km | (-20.772, 117.146) |
Local time:
Time Zone: America/Marigot
Coordinates: 18.1048° N 63.0536° W
Elevation: 6 m (20 ft)
Local time:
Time Zone: Australia/Perth
Coordinates: 20.6628° S 116.7126° E
Elevation: 31 m (102 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 Grand-Case
The DMS coordinates are: 18°6'17.1'' N 63°3'12.9'' W.
Calculations are easier by using the decimal format, hence:
LatO = 18.10476°
LngO = -63.05358°
Step 2: Calculate the latitude
LatA = - LatO = -18.10476°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -63.05358 + 180° = 116.94642°
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 Grand-Case is located on coordinates: (LatA, LngA) = (-18.10476, 116.94642)
In DMS format: 18°6'17.1'' N 63°3'12.9'' W.