What is meant by Indian standard time?why do we need a standard meridian in India
Answers
indian Standard Time. ... Indian Standard Time (IST) is the time observed throughout India, with a time offset of UTC+05:30. India does not observe daylight saving time (DST) or other seasonal adjustments.
We need a standard meridian for India because there is a time lag of about 2 hours between Gujarat and Arunachal Pradesh. To avoid confusion of time in different states , India adopted a standard meridian which is 82 degrees 30 E and it passes through Mirzapur in Uttar Pradesh.
Explanation:
India is a very big country. In order to maintain the uniformity of time within the country the Standard Meridian of India is taken as 82 ½ ° E longitude. It passes through the city of Allahabad. The local time along this Meridian serves as the Indian Standard Time (I.S.T) . The local time of Mirzapur near Allahabad is taken as the standard time all over India . I.S.T is 5:30 hours ahead of G.M.T (Greenwich Mean Time) located in London.
Standard Meridian of India is needed to maintain time uniformity in India. 82 ½ ° has been selected as the Standard Meridian of India due to the following reasons :
1. This is a central Meridian of India as it divides the country into two equal parts. 2.This Central Meridian helps India to adopt time uniformity
As we know that there are 24 time zone on earth and each country has its time zone that comes in 24 times zone. In 24 hours the earth rotates 360 degree and because of this at every degree there is 4 min difference that is called local time. so most of the countries have long longitudinal distance and because of this there is long time difference in the country from east to west so those countries need standard time for whole nation that’s y we need standard meridian.