Question

In India, $82.3^\circ $e longitude passes through how many states?

Answer 1

Hint: The measurement east or west of the prime meridian is known as longitude. Longitude is determined by imaginary lines that run vertically (up and down) across the Earth and converge at the North and South Poles. Meridians are the names given to these lines. One arcdegree of longitude is measured by each meridian.

Complete answer:
The local time varies from one location to the next. In India, the local times of Dwarka in Gujarat and Dibrugarh in Assam vary by around $1$ hour and $45$ minutes. As a result, the local time of a country's central meridian must be adopted as the country's standard time.

The standard meridian is defined as $82 \dfrac{1}{2}^\circ E$ $(82^\circ 30'E)$ longitude. The standard time for the entire country is the local time reported or specified at this meridian. The Indian Standard Time is what it's called (IST).

The Standard Meridian of India, which passes through Mirzapur in Uttar Pradesh and has a longitude of $82^\circ 30'E$, is used to determine the standard time for the entire world. Instead of using solar time or a locally chosen meridian (longitude) to determine a local mean time standard, standard time refers to the synchronisation of clocks within a geographical region to a single standard time.

India's standard meridian runs through the following states:
- Uttar Pradesh
- Madhya Pradesh
- Orissa
- Chattisgarh
- Andhra Pradesh

Note: Because it goes virtually through the centre of India, IST is used as the standard time. The precise hour is broadcast through the national All India Radio and Doordarshan television networks to inform the public. Telephone companies have special phone lines that are linked to mirror time servers, which also communicate the exact time.