Antipode of ‘Ohonua, Tonga

The opposite side of the world to ‘Ohonua is Tamanrasset, Algeria.



Continent: Oceania

Coordinates: -21.333, -174.950

Antipodal point

Opposite side in the world

Continent: Oceania

Coordinates: 21.333, 5.050



Tamanrasset is the closest city to ‘Ohonua's antipodal point (168 km).

The antipodal city to ‘Ohonua is Tamanrasset. This means that, among all the populated locations in the world, the farthest city from ‘Ohonua is Tamanrasset.

The distance from ‘Ohonua to Tamanrasset 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 ‘Ohonua

This table contains the populated locations that are closest to ‘Ohonua's antipode. These are the farthest cities in the world from ‘Ohonua.

City Country Distance from antipode Coordinates
Tamanrasset Algeria 168 km (22.785, 5.523)
Arlit, Agadez Niger 377 km (18.737, 7.385)
Ti-n-Essako, Kidal Mali 417 km (18.451, 2.488)
Abeïbara, Kidal Mali 423 km (19.117, 1.750)
Tessalit, Kidal Mali 439 km (20.201, 1.012)
Kidal Mali 498 km (18.441, 1.408)
Tchighozerine, Agadez Niger 537 km (17.221, 7.761)
Alaghsas, Agadez Niger 570 km (17.019, 8.017)
Agadez Niger 573 km (16.973, 7.991)
Tchintabaraden, Tahoua Niger 607 km (15.897, 5.799)

‘Ohonua, Tonga

Local time:

Coordinates: 21.3333° S 174.95° W

Tamanrasset, Algeria

Local time:

Coordinates: 22.785° N 5.5228° E

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 ‘Ohonua

The DMS coordinates are: 21°19'60'' S 174°56'60'' W.

Calculations are easier by using the decimal format, hence:

LatO = -21.33333°

LngO = -174.95°

Step 2: Calculate the latitude

LatA = - LatO = 21.33333°

Since the latitude is negative (south direction), the antipode must be positive (north direction).

Step 3: Calculate the longitude

LngA = LngO ± 180° = -174.95 + 180° = 5.05°

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.


The antipode of ‘Ohonua is located on coordinates: (LatA, LngA) = (21.33333, 5.05)

In DMS format: 21°19'60'' S 174°56'60'' W.

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