2. Each place has its own local time.

3. When it is noon the local time is 12 O'clock.

4. All places on a meridian has same local time.

5. The place in the east are ahead of west in time. For 1° longitude there is a difference of 4 minutes.

Standard time :
1. Standard time is the time of central meridian of an area.

2. All places have a uniform time.

3. It has no relation with moon or height of the sun.

4. All places in same region have the same standard time.

5. There is no change in time. So it is known as standard time.