Photo Credit: Time and Date

If the time at longitude 30⁰ E is 6.00 am, what will be the time at longitude 15⁰ W?


A. 3.00 am
B. 3.00 pm
C. 9.00 am
D. 9.00 pm

The Earth is divided into 24 time zones, each representing 15 degrees of longitude. The Earth rotates 360 degrees in 24 hours, which means it rotates 15 degrees per hour.

If the time at longitude 30⁰ E is 6.00 am, it implies that every 15 degrees to the west, the time would be one hour earlier. So, to find the time at longitude 15⁰ W, we need to go 45 degrees to the west from the initial position (30⁰ E to 15⁰ W).

45 degrees / 15 degrees per hour = 3 hours

Therefore, the time at longitude 15⁰ W would be 3 hours earlier than 6.00 am.

6.00 am – 3 hours = 3.00 am

So, the correct answer is A. 3.00 am.

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