Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q37 (CDS-I/2015) Geography › Maps & Locations › Geographical lines and coordinates Answer Verified

If 82° 30' east longitude (Allahabad) shows 6 : 00 am of Sunday (local time), what would be the local time of Florida (USA) located on 82° west longitude ?

Result
Your answer: —  ·  Correct: A
Explanation

To find the local time in Florida (82° W) relative to Allahabad (82° 30' E), we first calculate the total longitudinal difference. Since one is East and the other is West, we add them: 82° 30' + 82° = 164° 30' [2]. Earth rotates 1° every 4 minutes [3]. Thus, the time difference is 164.5 × 4 = 658 minutes, which equals 10 hours and 58 minutes. Because Florida is West of Allahabad, it is behind in time [3]. Subtracting 10 hours and 58 minutes from Sunday 6:00 am: subtracting 6 hours reaches 12:00 midnight (start of Sunday), and subtracting the remaining 4 hours and 58 minutes takes the time back to Saturday evening. Specifically, 12:00 midnight minus 4 hours 58 minutes results in 7:02 pm, but since we subtract from 6:00 am, the calculation (6:00 am - 10h 58m) yields 7:02 pm of the previous day, Saturday.

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. [2] INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 1: India — Location > INDIA – LOCATION > p. 2
  3. [3] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 2: The Earth's Crust > Longitude and Time > p. 11
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.
50%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

NDA-II · 2013 · Q60 Relevance score: -0.11

What would be the date and local time of a place located at 88B30 E longitude when the local time at 0s longitude is 19-00 hrs. of 28th February 2013?

IAS · 1994 · Q56 Relevance score: -0.11

When it is noon along 82° 30' E longitude along what degree of longitude it will be 6.30 am ?

CDS-I · 2013 · Q82 Relevance score: -0.96

If the time of a place located on 165° E meridian is 11 : 00 p. m. on Sunday, what would be the time at the place located on 165° W meridian ?

NDA-I · 2008 · Q60 Relevance score: -1.93

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

IAS · 1999 · Q3 Relevance score: -2.23

If it is 10.00 a.m. IST., then what would be the local time at Shillong on 92°E longitude ?