(i) Land boundaries: 15200 km.
(ii) Coastline including that of Andaman and Nicobar and Lakshadweep: 7516.6 km.

1. Indira Point (in Nicobar Island).
2. It got submerged in the sea during the Tsunami of Dec. 26, 2004.

\(68^{ \circ }7'E\)

(i) Northern boundary of India is 15200 kilometers long. It starts from the southernmost tip of the Runn and Kuchchh. This boundary passes along the Himalayas and Myanmar borders and ends at the head of Bay of Bengal. The coast line of India is 7517 kilometers long, including the coast line of Lakshadweep and Andaman and Nnicobar Islands.
(ii) India' north-south length is 3214 kilometers while her east-west breadth is 2933 kilometers. Her total geographical area 32.88 lakh square kilometers.

(i) Western coast  - Two
(ii) Daman and Diu
(iii) Dadra and Nagar Haveli
(iv) Eastern coast - One
(v) Puducherry

Russia, Canada, USA, China, Brazil and Australia

(i) At any point, the sun shines perpendicular between Tropic of Cancer and Tropic of Capricorn twice a year.
(ii) At the places lying between these two parallels of latitude, enjoy the overhead sun twice a year
(iii) Ahmedabad has latitude 23⁰N and Kolkata 22⁰34' N latitude
(iv) Ahmedabad and Kolkatta lie between these two parallels. Hence, they enjoy the overhead sun twice a year.
(v) Delhi is the north of Tropic of Cancer so sun cannot be directly overhead.

Local Time:
The time of a place determined by the midday sun is called the local time.

The Latitude-The Tropic of Cancer runs almost half-way through India. It divided India into two separate climatic zones.
(i) The southern part gets more heat from the sun that the northern part.
(ii) The difference between the duration of day and night is far more in northern parts than in the southern part.