Explanation: In India, the longitude of 82½° E (82° 30′ E) is considered the standard meridian. The local time at this meridian is taken as the standard time for the whole country. It is known as Indian Standard Time (IST).
What is standard meridian?
Standard Meridian is the longitude which is used to describe time of a country. It ideally should be the same for the whole country and all the places in a country should follow this same time. The standard meridian of India is 82.5 ° E and it passes through Mirzapur in Uttar Pradesh.
What is the standard meridian of India answer in one word?
The Standard Meridian of India having the longitude 82°30’E, which passes through Mirzapur in Uttar Pradesh is considered as the standard time for the whole country.
What is prime meridian of India?
The sun rises in the east and sets in the west. … To avoid this confusion a longitude passing through the midpoint of 68o 7′ East (western most longitude) and 97o 25′ East (eastern most longitude) is taken as the standard prime meridian of India (i.e. 82o30′).
What is the use of standard meridian time?
Answer: Standard time is the synchronization of clocks within a geographical area to a single standard time, rather than using solar time or a locally chosen meridian (longitude) to establish a local mean time standard.
What is a local time for class 6?
Answer: A local time is a time calculated on the basis of a specific meridian passing through a particular place, though the place may be included in some other time zone. All the places located on the same meridian have noon at the same time. Places located on different meridians have different local times.
What is the difference between local time and standard time Class 6?
Local time indicates the time of a place determined on the basis of apparent movement of the sun. Standard time refers to the fixed time for places falling in the same meridian, set in a country by law. Changes continuously with the change in longitude. Remains same for a particular country.
Why is 82.30 has been selected?
2 Answers. The Earth has been divided into 24 time zones of one hour each. … This causes a time lag of 2 hrs from Gujarat to Arunachal Pradesh to avoid confusion and to have a standard time for reference, The 82.30’Eastern Longitude has been taken as the standard time for the whole country.
How standard meridian is calculated?
To find the time meridian of a country, take the westernmost longitude and the easternmost longitude of that country, take the mean, and find the nearest multiple of 7.5 degree. As India’s longitudinal extent is from 68° 7′ 53″ E to 97° 24′ 47″ E. Nearest multiple of 7.5° is 82.5°.
What is standard meridian and standard time?
[′stan·dərd mə′rid·ē·ən] (geodesy) The meridian used for reckoning standard time; throughout most of the world the standard meridians are those whose longitudes are exactly divisible by 15°.
Why do we need a standard meridian?
The time of a place depends on the longitude that passes through it. Therefore, the standard time for each country is usually taken as the time of the central meridian that passes through it. … Thus, we need a standard meridian for the country. In India 82 ½ °E longitude determines the standard time.