India is a vast country with a unique location on the globe. Its size, its position between the Himalayas and the Indian Ocean, and the special Standard Meridian make India a land of great diversity and a natural meeting point of cultures and trade routes.
Location
India lies entirely in the Northern and Eastern Hemispheres, in the south-central part of Asia.
Size
India is the seventh largest country in the world by area — about 3.28 million sq km.
Tropic of Cancer
The 23°30' N line divides India into almost two equal parts.
Standard Meridian
82°30' E sets Indian Standard Time (IST) for the whole country.
India's location on the globe
India is a country of the Northern Hemisphere. The mainland extends between latitudes 8°4' N and 37°6' N and longitudes 68°7' E and 97°25' E. The Tropic of Cancer (23°30' N) passes almost halfway through the country, dividing it into two nearly equal parts. To the southeast lies the Bay of Bengal, to the southwest the Arabian Sea, and to the south the vast Indian Ocean. Because India juts out into the Indian Ocean, it commands a central position on the world's sea routes connecting Europe, Africa and the Far East. No other country has an ocean named after it — a sign of India's importance in the region.
Size of India
India is a huge country. Its total area is about 3.28 million square kilometres, which is about 2.4 per cent of the total geographical area of the world. This makes India the seventh largest country in the world, after Russia, Canada, the USA, China, Brazil and Australia. India has a land boundary of about 15,200 km, and the total length of the coastline of the mainland together with the islands (Andaman & Nicobar and Lakshadweep) is about 7,516.6 km. The north-south extent (from Kashmir to Kanyakumari) is about 3,214 km, while the east-west extent (from the Rann of Kachchh to Arunachal Pradesh) is about 2,933 km. Although the north-south extent appears longer than the east-west extent, both look almost equal on the map — this is because the distance between two longitudes (degrees of longitude) decreases as we move away from the equator towards the poles.
The Standard Meridian and time
There is a great difference in the local time of places located at the two extreme points of India. The longitudinal extent of India is about 30 degrees, which means that the time along the easternmost point (Arunachal Pradesh) is roughly two hours ahead of the westernmost point (Gujarat). When the sun rises in Arunachal Pradesh, it is still about two hours before sunrise in Gujarat. To avoid confusion of having many local times, the time along the Standard Meridian of India (82°30' E), which passes through Mirzapur in Uttar Pradesh, is taken as the standard time for the whole country. This is called Indian Standard Time (IST). IST is 5 hours 30 minutes ahead of Greenwich Mean Time (GMT).
India and the world
The Indian landmass occupies a strategic central location between East and West Asia. India is a southward extension of the Asian continent. The Trans-Indian Ocean routes connect the countries of Europe in the west and the countries of East Asia provide a strategic central location to India. The Deccan Peninsula protrudes into the Indian Ocean, helping India to establish close contact with West Asia, Africa and Europe on one side, and Southeast and East Asia on the other. No other country has a coastline as long as India's on the Indian Ocean, and it is thus justified to name an ocean after it. Throughout history, India's contacts with the world through land and sea routes have been very strong. Ideas, philosophies, the Upanishads, the Ramayana, Indian numerals and the decimal system reached many parts of the world. Spices, muslin and other goods were taken from India to different countries, while the influence of Greek sculpture and architectural styles from West Asia came to India.
India's neighbours
India has 29 states and 7 union territories (at the time the NCERT chapter was written). India shares its land boundaries with many countries. To the northwest are Pakistan and Afghanistan; to the north are China (Tibet), Nepal and Bhutan; to the east are Myanmar and Bangladesh. Sri Lanka and Maldives are India's southern island neighbours. Sri Lanka is separated from India by a narrow channel of sea formed by the Palk Strait and the Gulf of Mannar. The Maldives Islands lie to the south of the Lakshadweep Islands in the Arabian Sea. India has had strong geographical and historical links with its neighbours.
Why so many time zones are avoided
India lies between 68°7' E and 97°25' E, a longitudinal spread of nearly 30°. Since the Earth rotates 360° in 24 hours, it covers 15° in one hour, or 1° in 4 minutes. So a 30° spread means a time difference of about 2 hours between the eastern and western ends. If every place followed its own local time, daily life, railways and communication would become very confusing. That is why a single Standard Meridian (82°30' E) gives one uniform time — IST — to the entire nation.
- Latitudinal extent: 8°4' N to 37°6' N.
- Longitudinal extent: 68°7' E to 97°25' E.
- Total area: 3.28 million sq km = 2.4% of world area — 7th largest country.
- Tropic of Cancer = 23°30' N; Standard Meridian = 82°30' E (Mirzapur, U.P.).
- North-south extent = 3,214 km; East-west extent = 2,933 km.
- Land boundary = 15,200 km; Coastline = 7,516.6 km.
- IST is +5:30 hours ahead of GMT; East-west time gap = 2 hours.
Why is the difference between the durations of day and night hardly felt at Kanyakumari but not so at Kashmir? (5 marks)
- Begin by linking the answer to latitude.
- Explain the position of Kanyakumari near the equator.
- Contrast it with Kashmir in the far north.
- End with a clear conclusion.
Why is 82°30' E chosen as the Standard Meridian of India? (5 marks)
- State the need for a standard time.
- Explain the longitudinal extent and the time gap it creates.
- Describe how the central meridian solves this.
- Conclude with the result (IST).
Remember "7-2-4" → India is the 7th largest country, covers 2.4% of world area, and the time difference east-to-west is about 2 hours because longitude changes 4 minutes per degree. For the meridian, think "Mirzapur Marks the Middle" — 82°30' E.
Do not mix up latitude and longitude. Latitude (8°4' N to 37°6' N) controls climate and length of day; longitude (68°7' E to 97°25' E) controls time. Also remember the Standard Meridian is 82°30' E, not 82°30' N, and the Tropic of Cancer is a latitude, not a meridian.
Q1. Why is the latitudinal and longitudinal extent of the mainland of India important?
Answer: India's mainland extends between latitudes 8°4' N and 37°6' N and longitudes 68°7' E and 97°25' E. The latitudinal extent is important because it affects the climate — the southern parts near the equator are warm throughout the year, while the northern parts experience greater seasonal change. The longitudinal extent is important because it creates a time difference of about two hours between the eastern and western ends, which is why India follows a single Standard Time. Together, this extent gives India great variety in climate, vegetation and the length of day and night.
Q2. The sun rises two hours earlier in Arunachal Pradesh than in Gujarat. Why?
Answer: Arunachal Pradesh lies in the far east at about 97° E, while Gujarat lies in the far west at about 68° E. The difference between them is nearly 30 degrees of longitude. Since the Earth rotates from west to east and covers 1° of longitude in 4 minutes, a difference of about 30° equals roughly two hours. The eastern point faces the sun first, so the sun rises about two hours earlier in Arunachal Pradesh than in Gujarat. Yet both follow the same clock time (IST), based on the Standard Meridian 82°30' E.
Q3. Name the countries that share land and sea boundaries with India.
Answer: India shares its land boundaries with Pakistan and Afghanistan in the northwest; China, Nepal and Bhutan in the north; and Myanmar and Bangladesh in the east. Its southern island neighbours across the sea are Sri Lanka and the Maldives. Sri Lanka is separated from India by the Palk Strait and the Gulf of Mannar, while the Maldives lie to the south of the Lakshadweep Islands in the Arabian Sea.
Q4. How has India's central location on the globe benefited the country?
Answer: India occupies a strategic central position between East and West Asia. The Deccan Peninsula juts deep into the Indian Ocean, giving India long coastlines and access to important sea routes. This central location helped India to develop trade and cultural contacts with West Asia, Africa and Europe on one side and Southeast and East Asia on the other. Indian ideas, the decimal system, spices and muslin spread to many countries, while Greek sculpture and West Asian architecture reached India. The opening of the Suez Canal further reduced India's distance from Europe, strengthening its links with the world.
- ✅ India lies fully in the Northern and Eastern Hemispheres; Tropic of Cancer divides it in two.
- ✅ Area 3.28 million sq km = 2.4% of world; 7th largest country.
- ✅ Latitude 8°4'N–37°6'N; Longitude 68°7'E–97°25'E.
- ✅ Standard Meridian 82°30'E (Mirzapur) gives IST = GMT+5:30.
- ✅ Central location and long coastline made India a hub of trade and culture.
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