Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q60 (NDA-I/2008) Geography › Maps & Locations › Geographical lines and coordinates Answer Verified

Indian Standard Time refers to local time of which one of the following places in India?

Result
Your answer: —  Â·  Correct: A
Explanation

Indian Standard Time (IST) is calculated based on the 82.5° E longitude, which serves as the Standard Meridian of India [3]. This meridian passes close to the east of Prayagraj, formerly known as Allahabad, in the state of Uttar Pradesh [1]. Specifically, the reference point is often identified as the clock tower in Mirzapur, which is located near Allahabad [t1][t4]. The selection of 82°30' E as the standard meridian ensures a uniform time across the country, balancing the nearly two-hour time lag between India's easternmost and westernmost points [c2][t2]. Consequently, IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT) [c1][c4]. While other cities like Bhopal, Delhi, and Lucknow have their own local solar times based on their specific longitudes, they all follow the official time derived from the Allahabad/Mirzapur reference meridian [c2][t8].

Sources

  1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 18: Latitudes and Longitudes > Indian Standard Time > p. 245
  2. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 18: Latitudes and Longitudes > Standard Time and Time Zones > p. 243
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
60%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

CDS-I · 2009 · Q28 Relevance score: 4.97

Which one of the following longitudes determines the Indian Standard Time ?

CDS-II · 2021 · Q63 Relevance score: 4.55

Which of the following statements is/are correct with respect to Time Zone in India ? 1. There is one standard time for the whole country. 2. Andaman and Nicobar Islands and Lakshadweep Islands have different Time Zones. 3. Indian Standard Time (IST) is five and half hours behind GMT. Select the correct answer using the code given below :

NDA-II · 2012 · Q91 Relevance score: 3.83

Which of the following statements(s) is/are correct? 1. The local time of Itanagar (Arunachal Pradesh) is about two hours ahead than Dwarka (Gujarat). 2. The local time at Chennai (Tamil Nadu) and Lucknow (Utar Pradesh) is almost same. 3. The local time of Mumbai (Maharashtra) is one hour ahead than Kolkata (West bengal).

NDA-II · 2018 · Q23 Relevance score: 3.29

Consider the following places of India : 1. Itanagar 2. Imphal 3. Agartala 4. Aizawl Which one of the following is the correct chronological order of the above places in terms of sunrise time?

CDS-II · 2006 · Q14 Relevance score: 3.22

Which one of the following nations has recently pushed back its time and sync hronised with the Indian Standard Time ?