India lies in the Northern Hemisphere and the Eastern Hemisphere. The Indian mainland stretches between 8° 4'N latitude in the south and 37° 6'N latitude in the north. The longitudinal extent is 68° 7'E in the west and 97° 25'E in the east. It lies in the southern part of Asia. On three sides, India is surrounded by sea. Owing to its strategic location, it plays a great role in trade and commerce of the world. The east‒west extent of India is approximately 2,933 km and the north‒south extent is approximately 3,214 km.