Question

why at kashmir at 3 and 1/2hour

Answer 1

Kanyakumari is close to the equator, whereas Kashmir is far from the equator. This means that Kanyakumari is at a lesser latitude as compared to Kashmir. We know that Kanyakumari is at 8°N latitude, it is just 8 degrees from the equator. As equator receives direct sunlight, the duration between day and night would hardly be felt at Kanyakumari. On the other hand, Kashmir is at 37°N latitude, which means that it is 37 degrees away from the equator or it is 37 degrees away from the area which receives direct sunlight. So, there would be a big difference in the duration of day and night in Kashmir. This difference is of about 5hrs in Kashmir.