* From which second

From which time to started making the "Calendar/Time calculation", and how to start to find the "second" -
For identifying the "second period" how many "time period slots" to take chances to get exact second -
How to reach to identify the next day of same second time (exact) for one day calculation -
For "one day" those seconds only and every day same time period of seconds to identify, what are the things to observed -
How to identified from Days to Weeks, Months, Years, Decades , Centuries and so on with names -
One day to divide with seconds, minutes, hours and improve the importance by so many problems -
Before finding of Calendar/Time calculation, so many ways of systems to use for identify the time and finally they recognised with number system -
According to seven days a week, for everything have the some days to identify to make the time period as Calendar/Time calculation -
How much time taken to make a Calendar/Time calculation even with "exact period of second" and how many problems are facing with starting onwards up to get the Calendar/Time calculation -
From anytime to follow the calendar/Time calculation and every event(plan) have the exact time to obey all the things -
Before found the Calendar/Time calculation no one can guess how much time spend from starting of the nature to still Calendar period ( that period of balance time was in Universal time ) -
For identifying the time so many things are observed in nature with so many years according to sun, moon and so on -
For identifying on year to observe the seasonal conditions and nature differences, also planet, earth rotations etc.,. -
According to time period identified the state of planets, their situations also so eclipse's and also makes astrology procedure -
Everyday every second the state of person to calculate what happens according to signs their effects, state of star calculations ... -
So many people so much period of time hard work to get the full pledge shape knowledge by spending with second onwards till to get Calendar/Time calculation -
For finding of Calendar, there is intention like as me the time period what happens and how it goes no one find in universe, any have I know -