Since first time, people realized that change day and night activities life has to share day by day in the two types of time, the working time and rest time.
Not enough just to share in the day and night, then men also share the position of the sun based on the movements that they see every day, which is up from the feet up in the sky, moving up to the right in the crown of the head, then shifted back down to the horizon in the disappear.
Because of this movement the position of the sun bring out the differences shadow - shadow of the earth, then not long after terpikirlah by men at that time was to create a solarium with how to install a pole in the middle of a special surface that can even give them the description of the movement's position.
Of course this is only day the sun can be used since sunrise until sunset only. However it is enough to make people in the past can make the division of their daily activities.
According to historical records, is the nation's first early Greece the 12 regions making up the division in the field of the sun this day, starting from the sunrise to go down. With 12 of this section, the duration of sunlight touches the boundary of the field or get out of the limit previously referred to as one hour.
The division of this period and also include in the night so since sunrise, go down to rise again as the day it was agreed that the night has a matter of 24 hours. 24 hours of this, people then subdivide into a matter of minutes (where there is 1 hour 60 minutes) and second (where 1 minute is 60 seconds) that eventually become common benchmark in the world.
Hours that can show time in a matter of hours, minutes, seconds or even combination of them also appeared in many creations in the world. There are people who make the time one hour with the movement of sand is known by the term hours of sand, water or movement of water hours, machine movements - such as playing the machine at hand to analog and digital watches appear to have been using modern electrical equipment.
If the order be, hours, the sun is an indication of the oldest in the world ever made, and followed by hours of water, sand minutes, hours, analog to digital clock.
The development of hours to be so rapid, especially after the events of human life in the increasingly diverse world. In one time the sun shines more than five kinds of activities, so that any person should be the division of work and rest time carefully so that all the activities that can be done before the arrival or slumber in the dark night. Especially now in the night is still a lot of human activity, such as studying, reading, chatting between the family and others - others, so that people should be able to share the day with a sober night.
Now people are used to mark time from hours, minutes, even up to the second of the day so that people can do many things with the benchmarks - benchmarks that time. With so life becomes more productive in a different and creative activities. And, of course, for those of you who have a good time planning to build many of the benefits in her life.
So, Subhanallah .... God is Most Great inspire people to find different - a kind of time.