The opposite side of the world to Dadonghai is Tacna, Peru.
China
Continent: Asia
Coordinates: 18.221, 109.510
Opposite side in the world
Continent: Asia
Coordinates: -18.221, -70.490
Peru
Tacna is the closest city to Dadonghai's antipodal point (34 km).
The antipodal city to Dadonghai is Tacna. This means that, among all the populated locations in the world, the farthest city from Dadonghai is Tacna.
The distance from Dadonghai to Tacna is about 20,000 kilometers. A direct flight would take around 22 hours, but there aren't commercial routes between these cities.
This table contains the populated locations that are closest to Dadonghai's antipode. These are the farthest cities in the world from Dadonghai.
City | Country | Distance from antipode | Coordinates |
---|---|---|---|
Tacna | Peru | 34 km | (-18.015, -70.254) |
Arica, Arica y Parinacota | Chile | 35 km | (-18.475, -70.298) |
Pocollay, Tacna | Peru | 39 km | (-17.992, -70.213) |
Sobraya, Tacna | Peru | 40 km | (-17.995, -70.195) |
Las Yaras, Tacna | Peru | 40 km | (-17.864, -70.561) |
Piedra Blanca, Tacna | Peru | 43 km | (-17.971, -70.181) |
Calana, Tacna | Peru | 44 km | (-17.942, -70.187) |
Sama Grande, Tacna | Peru | 48 km | (-17.791, -70.500) |
Ite, Tacna | Peru | 64 km | (-17.861, -70.965) |
Locumba, Tacna | Peru | 73 km | (-17.613, -70.763) |
Local time:
Coordinates: 18.2206° N 109.5103° E
Local time:
Coordinates: 18.0147° S 70.2536° W
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 Dadonghai
The DMS coordinates are: 18°13'14'' N 109°30'37'' E .
Calculations are easier by using the decimal format, hence:
LatO = 18.22056°
LngO = 109.51028°
Step 2: Calculate the latitude
LatA = - LatO = -18.22056°
Since the latitude is positive (north direction), the antipode must be negative (south direction).
Step 3: Calculate the longitude
LngA = LngO ± 180° = 109.51028 - 180° = -70.48972°
Since the longitude is positive, we subtract 180° to ensure the final value lies between (-180, 180). If it were the other way around, we would sum 180° for the same reason.
Result:
The antipode of Dadonghai is located on coordinates: (LatA, LngA) = (-18.22056, -70.48972)
In DMS format: 18°13'14'' N 109°30'37'' E .