The westernmost longitude of India is approximately:

The longitudinal extent of the mainland of India is between $68^{\circ }{7}^{\prime }\text{E}$ (at Guhar Moti, Gujarat) in the west and $97^{\circ }25^{\prime }\text{E}$ (at Kibithu, Arunachal Pradesh) in the east. Thus, the westernmost longitude is $68^{\circ }{7}^{\prime }\text{E}$.