If it is 3:00 PM in New Delhi (77.1°E), what time is it in London (0° longitude)

Practice Questions

Q1
If it is 3:00 PM in New Delhi (77.1°E), what time is it in London (0° longitude)?
  1. 9:30 AM
  2. 8:30 AM
  3. 10:30 AM
  4. 7:30 AM

Questions & Step-by-Step Solutions

If it is 3:00 PM in New Delhi (77.1°E), what time is it in London (0° longitude)?
  • Step 1: Understand that New Delhi is at 77.1°E longitude.
  • Step 2: Know that each degree of longitude represents 4 minutes of time difference from UTC (Coordinated Universal Time).
  • Step 3: Calculate the time difference by multiplying the degrees (77.1) by 4 minutes: 77.1 * 4 = 308.4 minutes.
  • Step 4: Convert 308.4 minutes into hours and minutes. There are 60 minutes in an hour, so 308.4 minutes is 5 hours and 8 minutes.
  • Step 5: Since New Delhi is ahead of UTC, subtract the time difference from the New Delhi time (3:00 PM).
  • Step 6: Subtract 5 hours from 3:00 PM, which gives you 10:00 AM.
  • Step 7: Subtract the remaining 8 minutes from 10:00 AM, resulting in 9:52 AM.
  • Step 8: Therefore, the time in London is 9:52 AM.
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