When the sun rises in Arunachal Pradesh as compared to Gujarat in the west but the watches show the same time how does this happen?

From Gujarat to Arunachal Pradesh there is a time lag of two hours, but the watches show the same time it is because the time along the central meridian of India is (82degree 30 minutes) east passing through Mirzapur in U.P. is taken as the standard time for the whole country.

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Hint: The earth's surface is divided into 24 time zones of one hour each. Each zone thus covers 15 degrees of longitude and every longitude differs by 4 minutes.

Complete answer: The earth’s globe consists of 360 meridians and it is divided into two sections. Meridians ranging from 1-180 are referred to as the Eastern Meridians and the meridians ranging from 181-360 are referred to as Western Meridians. In India, the longitude of 82.30 degrees East is treated as the standard meridian. This is because the meridian 82.30 passes through Mirzapur so, for the whole country, the local time at this meridian is taken as the standard time and is known as the Indian Standard Time (IST). There is a difference in the local times of Gujarat and Arunachal Pradesh. The difference between these two states is 2 hours. So because of this reason, it is important to adopt the local time of some central meridian of a country as the standard time for the country in order to avoid chaos and confusion. Hence, the watches show the same time in both Arunachal Pradesh and Gujarat.

Note: As the earth revolves from west to east, those places lying to the west of Greenwich will be behind Greenwich time and those to the east will be ahead of it. The Indian Standard Time is 5 and a half hours ahead of the Greenwich Mean Time.

The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the West but the watches show the same time because the Longitudinal distance between them is 30 degrees. There are 24 time zones on Earth, each lasting one hour. As a result, each zone covers 15 degrees of longitude, with a difference of 4 minutes in each longitude.

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Sun Rises in Arunachal Pradesh as Compared to Gujarat

Arunachal Pradesh and Gujarat are about 30 degrees apart, so there is a time gap of two hours between them. Since Arunachal Pradesh is located in the east, the sun rises earlier than in Gujarat. However, due to the Indian Standard Meridian, the clock is displayed at the same time.

The Earth's globe is divided into two by 360 meridians. The meridians from 1 to 180 are called the eastern meridian, while the range 181-360 is called the western meridian. The standard meridian in India is 82.30 degrees east. Since Meridian 82.30 passes through Mirzapur, Indian Standard Time (IST) is based on local time on this meridian for the entire country.

The local time of Gujarat and Arunachal Pradesh is different. There is a time difference of two hours between these two states. As a result, to avoid chaos and confusion, it is important to adopt some central meridian as the country's standard time. Hence Arunachal Pradesh and Gujarat show the same time on their clocks.

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FAQs on Sun Rises in Arunachal Pradesh as Compared to Gujarat

  • The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the West but the watches show the same time. How does this happen?

  • Why is there a time difference of 2 hours between Gujarat and Arunachal Pradesh?

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Best Answer

Explanation:

The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the west. But the clocks show the same time this happens because: 

i) The longitudinal gap between Arunachal Pradesh and Gujarat is about 30. 

ii) Due to this, there is time lag of about two hours between these states. 

iii) Since Arunachal Pradesh is in the east, the sun rises earlier here compared to Gujarat. 

iv) The Indian Standard Time is taken from the time of Standard Meridian of India and hence, the watches show the same time in both the states.

Final Answer:

As the longitudinal gap between Arunachal Pradesh and Gujarat is about 30 degrees, the time lag between these two states is two hours. Since Arunachal Pradesh is situated in the east, the sun rises earlier here compared to Gujarat in the west. But the watch shows the same time because of the Standard Meridian of India.

Why sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the west?

Answer: Since the longitudinal extent of India's west to east is 68° 7′ E to 97° 25′ E and it is roughly 30 degrees longitude interval, the sun rises two hours earlier in the eastern portion of Arunachal Pradesh than in the western part of Gujarat.

Why do all the clocks in India show the same time though they are in different locations?

iv) The Indian Standard Time is taken from the time of Standard Meridian of India and hence, the watches show the same time in both the states.

When the sun rises in Arunachal Pradesh it is still dark in Gujarat Why give any three reasons?

1) The earth rotates from west to east and so, the sun rises earlier in Arunachal Pradesh than in Gujarat. 2) The sun rises from the east and moves toward the west. Arunachal Pradesh is to the east of Gujarat. 3) There is 2 hour difference between the meridians of A.P and Gujarat.

When the sun has already risen in Arunachal Pradesh it is still dark in Gujarat why Class 9?

The earth rotates from west to east this is why the sun rises earlier in Arunachal Pradesh than in Gujarat. There is 2 hours difference between the meridians of A.P and Gujarat. This causes a time lag of 2 hours. So, it is still night in Gujarat when day in A.P.