Geography, asked by ytoshilmaring48771, 1 year ago

calculate the time at Durban(longitude 30 degree east)when the time is 7:00 a.m. at New York(75 degree west).

Answers

Answered by OfficialPk
6
A 24-hour difference is observed for a rotation through 360°.
So for a difference of 30° – (–75°) = 105° will give a difference of 24×105/360 = 7 hours.

So according to calculations, the difference should be of 7 hours. Since the earth moves from west towards east, the difference shall be positive going east. So, it should be 0700 + 0700 = 1400 hours on the same date in Durban.

Actual time

But not all time zones have been internationally accepted according to what is calculated. So, let's come to the facts. And in this case, the facts are in sync with the calculations. New York is UTC – 5, and Durban is UTC + 2. So, it again is a seven hour difference.

However, New York observes Daylight Saving Time. In 2013, the DST is to be observed from March 10 to November 3. So, between these dates, New York is in time zone UTC – 4. Durban does not observe Daylight Saving Time, so it remains at UTC + 2.


Therefore, 

(1) during the DST period, it is 1300 hours on the same date in Durban when it is 0700 hours in New York,

(2) when DST is not observed, it is 1400 hours on the same date in Durban when it is 0700 hours in New York.


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