# NCERT Class 6 Geography Chapter 2: Globe-Latitudes & Longitudes Complete Notes Part 5 (For CBSE, ICSE, IAS, NET, NRA 2022)

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How can I do that?

Example 1:

As we know every degree where different 1 time zone is, all that towards east would be an addition and Ahead. All to west would be subtraction or loss of time. So if here. At and , and and degree would be 6 pm. So if I know the time at degree east. Which is 2 pm. I can straight forwardly calculate at the time at degree east which would be . Now that՚s one way, other way around would be if I know time here is say and it would be .

So what is the difference between the time zone? See both values is degree east and degree east and you have one time and another time is . I simply subtract two times. So so would be . So difference between a time zone would be 4 hours.

Example 2:

Now if I have in another example which takes a as I say degree west and degree east. Now I have the time which is here. I am moving backwards so it would be .

So if it is at degree east it would be degree west. So what I am doing here is if I know the time zone, let see here time zone, is , because it this and here is and here is . So, what is the difference between two time zone. Since crossing the Greenwich meridian you would have to add this two values and time difference would be again 4 hours behind the time difference here. Which is so if we calculate that ways, you have time zone here and and different of would be 4 hours again. You can take difference at a time itself, or time zone. So first example explain about a time and second example explain about time zone.

So if you are using time zone you have + 2 time zone and + 6 time zone difference would be 4 hours. And again here + 2 time zone and -2 time zone different would be 4 hours again.

Let understand how?

If we run on a number line zero, I jump 1, 2, 3,4, 5,6 so if we work for a simple number line for a lower standard student. Then easily understand that from 2 if I՚m jumping on to 6 there is a difference of 4. I am moving on including negative number line in a same concept what would who happen? I՚m having + 2 time zone here and -2 time zone here, so my total time zone then again is difference that is 4.