The opposite side of the world to Half Moon Bay is West Island, Cocos Islands.
Cayman Islands
Continent: America
Coordinates: 19.297, -81.151
Indian Ocean
Exact location on the other side of the world
Coordinates: -19.297, 98.849
Cocos Islands
West Island is the closest city to Half Moon Bay's antipodal point (819 km).
The antipodal city to Half Moon Bay is West Island. This means that, among all the populated locations in the world, the farthest city from Half Moon Bay is West Island.
The distance from Half Moon Bay to West Island is about 19,000 kilometers. A direct flight would take around 21 hours, but there aren't commercial routes between these cities.
This table contains the populated locations that are closest to Half Moon Bay's antipode. These are the farthest cities in the world from Half Moon Bay.
| City | Country | Distance from antipode | Coordinates |
|---|---|---|---|
| West Island | Cocos Islands | 819 km | (-12.157, 96.823) |
| Flying Fish Cove | Christmas Island | 1,226 km | (-10.422, 105.679) |
| Cibungur, West Java | Indonesia | 1,559 km | (-7.372, 106.539) |
| Simpenan, West Java | Indonesia | 1,560 km | (-7.350, 106.514) |
| Pondokaso, West Java | Indonesia | 1,561 km | (-7.356, 106.542) |
| Ciracap, West Java | Indonesia | 1,562 km | (-7.331, 106.522) |
| Cikujang, West Java | Indonesia | 1,563 km | (-7.359, 106.573) |
| Surade, West Java | Indonesia | 1,564 km | (-7.342, 106.562) |
| Nagrak, West Java | Indonesia | 1,564 km | (-7.336, 106.553) |
| Tugu Hilir, Banten | Indonesia | 1,564 km | (-6.809, 105.629) |
Local time:
Time Zone: America/Cayman
Coordinates: 19.2969° N 81.151° W
Local time:
Time Zone: Indian/Cocos
Coordinates: 12.1568° S 96.8225° E
The antipode can be calculated by understanding the geographic coordinates and applying simple formulas. We will use the following variables:
Step 1: Obtain the geographic coordinates of Half Moon Bay
The DMS coordinates are: 19°17'48.8'' N 81°9'3.7'' W.
Calculations are easier by using the decimal format, hence:
LatO = 19.29689°
LngO = -81.15102°
Step 2: Calculate the latitude
LatA = - LatO = -19.29689°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = -81.15102 + 180° = 98.84898°
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 Half Moon Bay is located on coordinates: (LatA, LngA) = (-19.29689, 98.84898)
In DMS format: 19°17'48.8'' N 81°9'3.7'' W.