About hundred years ago Einstein published his “General Theory of Relativity” that has been survived over a century, and provides the successful way to describe space and time .In space there is only one time which is related to space co-ordinates as a fourth dimension which is same all over the space .But what about earth ? Why there different time zone on different place ? Isn’t it possible to make same time all over the world ?
In earth , clock time indication is based upon sun rise and sun set ,rather than Einstein’s general theory of relativity . when sun comes just above your head that time is defined as 12:00 noon . Greenwich South-east London is the standard place where time was first standardized .And that time is synchronized within a geographical area or region to make a single time standard, rather than using solar time .
What if you synchronize all clock on earth ?
It’s all about the sunset and sun rise on different location .If we make same time over the world everyone should remember what time 12:00 is not a mid day on all over the world . Mid day may occur at 6:00AM on some location and 5:00 PM on some other . What do you feel if you find sun rising 1PM in some area ? And that feels completely wired ! also you have to remember when sun sets rises, and when it comes to top of head for different locations .