Answer

In geography, the antipode (/ænˈtɪpədiː/) of any spot on Earth is the point on Earth's surface diametrically opposite to it; the antipodes of a region similarly represent the area opposite it.^{[note 1]} A pair of points antipodal (/ænˈtɪpədəl/) to each other are situated such that a straight line connecting the two would pass through Earth's center. Such points are as far away from each other as possible, a great-circle distance of 10,800 nautical miles (20,000 km).