Antipode of St Martin, Guernsey
The opposite side of the world to St Martin is Portobello, Otago, New Zealand.
St Martin
Guernsey
Continent: Europe
Coordinates: 49.437, -2.555
Antipodal point
South Pacific Ocean
Exact location on the other side of the world
Coordinates: -49.437, 177.445
Portobello
New Zealand
Portobello is the closest city to St Martin's antipodal point (647 km).
The antipodal city to St Martin is Portobello. This means that, among all the populated locations in the world, the farthest city from St Martin is Portobello.
The distance from St Martin to Portobello is about 19,000 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 St Martin
This table contains the populated locations that are closest to St Martin's antipode. These are the farthest cities in the world from St Martin.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| Portobello, Otago | New Zealand | 647 km | (-45.850, 170.650) |
| Macandrew Bay, Otago | New Zealand | 649 km | (-45.867, 170.600) |
| Andersons Bay, Otago | New Zealand | 651 km | (-45.896, 170.531) |
| Tainui, Otago | New Zealand | 651 km | (-45.901, 170.523) |
| Port Chalmers, Otago | New Zealand | 652 km | (-45.817, 170.620) |
| Waverley, Otago | New Zealand | 652 km | (-45.882, 170.539) |
| Shiel Hill, Otago | New Zealand | 652 km | (-45.888, 170.530) |
| Musselburgh, Otago | New Zealand | 652 km | (-45.897, 170.515) |
| Ravensbourne, Otago | New Zealand | 652 km | (-45.867, 170.550) |
| Saint Kilda, Otago | New Zealand | 653 km | (-45.902, 170.502) |
Local time:
Time Zone: Europe/Guernsey
Coordinates: 49.4371° N 2.5548° W
Elevation: 97 m (318 ft)
Local time:
Time Zone: Pacific/Auckland
Coordinates: 45.85° S 170.65° E
Elevation: 77 m (253 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 St Martin
The DMS coordinates are: 49°26'13.7'' N 2°33'17.2'' W.
Calculations are easier by using the decimal format, hence:
LatO = 49.43713°
LngO = -2.55479°
Step 2: Calculate the latitude
LatA = - LatO = -49.43713°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -2.55479 + 180° = 177.44521°
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 St Martin is located on coordinates: (LatA, LngA) = (-49.43713, 177.44521)
In DMS format: 49°26'13.7'' N 2°33'17.2'' W.