Why is the difference between the durationsof day and night hardly felt at Kanniyakumaribut not so in Kashmir?

The difference in the durations of day and night is hardly felt at Kanyakumari but is quite noticeable in Kashmir due to the geographical location of these places.

1. Latitude: Kanyakumari is located near the equator (8.08°N) while Kashmir is situated at a higher latitude near the Tropic of Cancer (33.77°N). The equator receives direct sunlight throughout the year, which results in almost equal length of day and night. On the other hand, places located at higher latitudes experience significant variations in the length of day and night due to the tilt of the Earth's axis.

2. Earth's Tilt: The Earth's axis is tilted at an angle of 23.5 degrees. This tilt, combined with the Earth's revolution around the Sun, causes the Sun to appear to move north and south in the sky throughout the year. This movement results in changing day lengths. At the equator, this change is minimal, but it becomes more pronounced as you move towards the poles.

3. Revolution of Earth: As the Earth revolves around the Sun, the tilt of the Earth's axis causes the Sun's rays to hit different latitudes at different angles. This results in varying day lengths. In summer, the North Pole is tilted towards the Sun, resulting in longer days and shorter nights. In winter, it is tilted away from the Sun, resulting in shorter days and longer nights. This effect is more pronounced in Kashmir due to its higher latitude.

In conclusion, the difference in the durations of day and night at Kanyakumari and Kashmir is due to their different latitudes and the tilt of the Earth's axis.