Question

what is the total number of Time Zones ?What is the longitudinal extent of a time zone ?​

Answer 1

Answer:

If each time zone were 1 hour apart, there would be 24 in the world. But several time zones have only 30 and 45 minutes offsets, making the total number worldwide much higher.

More Than 24 Time Zones

If each time zone were 1 hour apart, there would be 24 in the world.

However, the International Date Line (IDL) creates 3 more. Also, several time zones are only 30 or 45 minutes apart, increasing the total number of standard time zones even further.

Answer 2

Answer:

Here Is Your Answer.

The world is divided into 24 time zones.The 24 time zones, created in accordance to each hour of the day, are theoretically drawn vertically like longitudes over the globe.

The local time of places that lie on the different meridians differ. It is, therefore, necessary to adopt the local time of some central meridian of a country as the standard time for the country for uniformity.

In India, the longitude of 82° E (82° 30' E) is treated as the standard meridian and the local time at this meridian is considered as the standard time for the whole country. It is known as the Indian Standard Time (IST).

Similarly some countries have adopted more than one standard time due to their great longitudinal extent. For example, in Russia, there are as many as eleven standard times.

The earth has been divided into twenty-four time zones of one hour each. Each zone thus covers 15° of longitude.