Introduction
Standard time is the synchronization of clocks within a geographical region to a single time standard. It is important to have a standard time to ensure that people can coordinate their activities and communication effectively.

History of Standard Time
Before the development of standardized time, each city and town kept its own local time based on the position of the sun. This system made it difficult for people to coordinate activities and communication beyond their own town. In the 19th century, railways and telegraphs made it necessary to have a standard time across large regions.

Benefits of Standard Time
Having a standard time system provides numerous benefits, including:

1. Coordination: Standard time allows people to coordinate their activities and communication effectively across different regions.

2. Travel: Standard time makes traveling easier because people can calculate the time difference between different regions.

3. Business: Standard time is essential for conducting business across different regions or countries, as businesses need to know the time in different parts of the world to schedule meetings, make calls, and deliver goods.

4. Safety: Standard time is also important for safety purposes, such as coordinating emergency services and transportation.

Standard Time Zones
To ensure that different regions have the same time, the world is divided into twenty-four time zones, each one hour apart. The time zones are based on the position of the sun, with each zone representing a longitudinal range of 15 degrees. The time zones are designated by a letter of the alphabet, such as EST for Eastern Standard Time or GMT for Greenwich Mean Time.

Conclusion
In conclusion, standard time is essential for coordinating activities and communication across different regions. It makes travel, business, and safety easier and more efficient. The development of standard time has been a significant advancement in human history, and it continues to play an important role in our everyday lives.

if every meridian will follow it own local time, there will be a lot of confusion like we wouldn't be able to the timings of flights and train and even business schedules. To avoid this confusion the middle longitude of the country is taken as standard meridian and it's local time is taken as the standard time for whole country.