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

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

Options:

Correct Answer: 8:30 AM

Solution:

New Delhi is 77.1°E, which is 77.1 * 4 = 308.4 minutes ahead of UTC. Therefore, it is 3:00 PM - 5 hours and 8 minutes = 9:30 AM in London.

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

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.

Time Zone Calculation – Understanding how to convert time between different time zones based on their longitudinal differences.
UTC Offset – Calculating the offset from Coordinated Universal Time (UTC) based on the degrees of longitude.