The country located at 20 degrees north and 78 degrees east is India.
Chad.
The North Pacific Ocean.
The coordinates 20 degrees north and 30 degrees east intersect in the African continent. Specifically, they are located in northern Africa, in countries such as Egypt or Sudan.
India.
Sarandë, Albania.
The Mediterranean Sea
it is the Atlantic Ocean
Gulf of Thailand
Dahanu, India.
Fushe-Verri, Albania.
This is about the center of the Rub al Khali, the "Empty Quarter" of Saudi Arabia.