Look at the map of the Time Zones (Fig. 2.7) and answer the following questions:

1. What is the Longitudinal degree of IST?
2. If it is 2 a.m. IST, what will be the Time at Tokyo, London, San Francisco?
3. Name the place which is diametrically opposite of India.
4. Is the Indian Standard Time ahead of San Francisco Time? Give reasons for your answer.

1. 82 1/2° E
2. Tokyo - 5:30 am
   London - 9:30 pm
   San Francisco - 1:30 pm
3. Chile is diametrically opposite of India.
4. Yes, Indian Standard Time is ahead of San Francisco Time as India is 5:30 hrs ahead of GMT while San Francisco is 7:00 hrs behind GMT.