Time Zone

Question 1

Why do we have different time zones

Answer 1

Different parts of the world experience day and night at different times. The time zones give an indication of the different times in different places.

Question 2

What is GMT?

Answer 2

Is stands for Greenwich Median Time and is the time that is at Greenwich at any given time.

Question 3

What value is given to GMT in the time zone?

Answer 3

It is given 0 as we all make reference to GMT

Question 4

If you lie in a zone to the East of GMT, is the time difference positive or negative

Answer 4

It is positive as it is to the right of GMT, and is similar to a number line.

Question 5

If you lie in a zone to the West of GMT, is the time difference positive or negative

Answer 5

It is negative as it is to the left of GMT, and is similar to a number line.

Question 6

Singapore is +8 GMT

Stockholm is +1 GMT

What is the time difference

Answer 6

Time Difference = 8 - 1

= 7 hr

Question 7

Singapore is +8 GMT

New York is -4 GMT

What is the time difference

Answer 7

Time Difference = 8 - (-4)

= 12 hr

Question 8

Singapore is 7 hours ahead of Stockholm

It is 1020 in Singapore

What time is it in Stockholm?

Answer 8

Time at Stockholm = 1020 - 0700

= 0320

Question 9

Singapore is 12 hours ahead of New York

It is 1020 in Singapore on 22 Sep

What time is it in New York?

Answer 9

Since 1020 is smaller than 1200, we need to add 2400 to 1020 first

1020 + 2400 = 3420

Time at New York = 3420 - 1200

= 2220 on 21 Sep