Time is the relativity of existing life and the event that we live from the past and going  in to the future. It's an interconnected phenomenon of the living and non living organism live in the universe in which all the planet are survive and dependent on each other. The fundamental concept of time in life it's the quantity that we have spend in every single second in comparison with the event that we carrying out in the day to day works.

Time is important in all aspect of Study in relevant parameter of all subject like Art, commerce, Science and religious etc. It's also scrolling in all other field like business, sports, industry, machinery, space industry, textile industry, trading platform, corporate world etc they all are artistic scrolling with time into with their measuring system. The nature of time addressing the nature of work and it's depend on specific parameter that called International System Of Unity (SI) and the unit of time is “Second”

The world time based  Upon second of clock and it's called “Time Scale”.Time Scale that is Greenwich mean time (GMT) firstly introduced by Greenwich for using in Railway and shipping purposes in 1847 this concept is work based on solar mean time principle. Later that UTC was established i.e “Universal Time Scale ” It's upgrade into different part like UTC-1, UTC-2 etc . Inspite of that the other things also developed i.e “International atomic time” (TAI), “Terrestrial Time” (TT) and “Barycentric Dynamical Time” But less in use.

And the out of this the question is comes from what is UTC? And how it's use when GMT ias available.

Then answer is that : UTC time  as being perpendicular from atomic time by a Total number of seconds, changing only when a Leap Second is added to keep radio-controlled clocks Synchronized with the rotation of the Earth.

Now a days GPS introduced ie "Global Positioning System" It's also a broadcasts gives you a very precise Time Signal worldwide, along with instructions for converting GPS time to UTC. GPS-time is based on, and regularly synchronized with or from, UTC-time.this unique technique consuming time with minimal error and give accurate time in stimulated location. The time is divided into four zone in the world like North, South, East and waste and intimately its works along with the solar laps