Is there an official world clock?
Yes, the world clock, known as the name of Urania World Clock, is an extensive turret-style world clock located in the public square of Alexanderplatz in Mitte, Berlin.
UTC - The World's Time Standard today. UTC is fundamental for civil time nowadays.
Why not all the world have the same clock?
Time is a measure based on the longitude of the place. Different places have a different longitude, and time also will change according to that. So, this is why the world can't have an exact time. The Meridian traverses the earth every day. So we estimate time according to that.
What are the time 12-hour and 24-hour clocks?
Two ways will help you to know the time.
One, the 12-hour clock will run from 1:00 AM to 12:00 noon and then from 1:00 PM to 12:00 Midnight.
The 24 - hour clock uses the numbers 00:00 to 23:59 Midnight.
How accurate is the world clock?
Atomic clocks show the most accurate time, and it is used explicitly to emit photons and absorb frequencies at regular intervals to maintain time. This clock is most accurate, and it will lose one second every 100 million years approximately. On the other hand, the average quartz clock will lose a second every couple of years.