Why do we need to have different time zones around the world?
As it is night in some parts of the world while it is day in other parts, different places in the world have different times. This is why the world is divided into 24 different time zones. One for each hour in a day. Most smaller countries keep to the same time zone even if part of them falls outside a meridian line.
Why does US have time difference?
Every city in the United States used a different time standard so there were more than 300 local sun times to choose from. Time zones were therefore a compromise, relaxing the complex geographic dependence while still allowing local time to be approximate with mean solar time.
What’s the biggest time difference between two places?
The biggest time difference between two locations on Earth is well over 20 hours. International Date Line passes through the Pacific Ocean. A time zone refers to a place on earth that uses a uniform standard time in order to streamline legal, social, and commercial activities. The time zones are defined by the boundaries of countries.
Why do we have different time zones in the world?
Now, if we had one time zone, then 12 pm would be noon at some places, but it would be night or evening at other places which would be inconvenient. Hence, scientists made different time zones according to the earth’s rotation with respect to the sun. Do you know how? The earth makes one full 360 degrees rotation in 24 hours.
How do you calculate the time difference between two countries?
Find the time zone offset from UTC for the other place. Subtract one from the other. For example, if you want the time difference between the USA and Australia, you have a choice of several time zones in each country, and the time difference can be between 11 and 21 hours, depending on the locations and the time of year.
What is the difference between longitude and time?
Each of these longitudes is called a degree. The 0 degree longitude passing through Greenwich, near London, is considered as standard and the time of all other time zones are calculated accordingly. The time difference between each longitude (each degree) is 4 minutes.