Tonga, while physically located in the Western Hemisphere, is actually considered in the Eastern Hemisphere for purposes of calculating the date. The international date line, which normally runs along the 180th line of longitude, swings in an easterly direction around Tonga and then back to the 180th line of longitude.
Tahiti is located in the southern (and western) hemisphere.
Tu'i kanokupoulu of vava'u and ha'apai aka siaosi tupou uluaki took the title from tu'i tonga replace it to tu'i kanokupoulu last dynasty
the ocean that is not found in the northern hemisphere is the antartica ocean
Most of Oceania lies in the Eastern hemisphere, but the 180° longitude passes through the easternmost part of Oceania and all of the islands east of that are in the Western hemisphere - including Tonga, Samoa and French Polynesia.
South America and Antarctica are both found in the Southern Hemisphere.
Northern Hemisphere
It is in the northern hemisphere.
Easter Hemisphere
The Indian Ocean is not found in the Western Hemisphere.
They are found in Antarctica which is in the Southern Hemisphere.
Greenland is part of the northern hemisphere