speaking from experience-research-different forms of time

Different Forms of Time

http://discoveriesindisplacement.com/index.php?/journey---methodology/different-forms-of-time/

At some point, people started understanding the order of the natural phenomena and calculated it based on regularity of nature - such as flood and drought, changes in weather, and movement of stars. From this, people created the calendar and the clock. Even though there is no start and end of the flow of time, horologists divide time into 12 hours, 60 minutes and 60 seconds. Based on this conception, there is designated time. The earth is divided into 24 time zones. In Einstein’s theory of Special Relativity, traveling faster than the speed of light changes how we age. Even a sub-light speeds, we can actually experience distortion of time when we are on a flight to go somewhere and go across the time zones. Even though there is no physical line on the earth, there are different conceptual times zones make us feel younger or older.

Sundial

http://en.wikipedia.org/wiki/Sundial

A sundial is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style onto a surface marked with lines indicating the hours of the day. The style is the time-telling edge of thegnomon, often a thin rod or a sharp, straight edge. As the sun moves across the sky, the shadow-edge aligns with different hour-lines. All sundials must be aligned with the axis of the Earth's rotation to tell the correct time. In most designs, the style must point towards true celestial north (not the north magnetic pole or south magnetic pole). That is, the style's horizontal angle must equal the sundial's geographical latitude.

Sundial in Singapore Botanic Gardens. The fact thatSingapore is located almost at the equator is reflected in its design.

An equatorial sundial in theForbidden City, Beijing. The gnomon points true North and its angle with horizontal equals the local latitude. Closer inspection of the full-size image reveals the "spider-web" of date rings and hour-lines.

Horizontal sundial inMinnesota.

Equatorial bow sundial inHasselt, Flanders in Belgium. The rays pass through the narrow slot, forming a uniformly rotating sheet of light that falls on the circular bow. The hour-lines are equally spaced; in this image, the local solar time is roughly 15:00 hours (3 pm). On September 10, a small ball, welded into the slot casts a shadow on centre of the hour band.

Clock

http://en.wikipedia.org/wiki/Clock

A clock is an instrument used to indicate, keep, and co-ordinate time. The word clock is derived ultimately (via Dutch, Northern French, and Medieval Latin) from the Celtic wordsclagan and clocca meaning "bell". A silent instrument missing such a mechanism has traditionally been known as a timepiece.^[1] In general usage today a "clock" refers to any device for measuring and displaying the time. Watches and other timepieces that can be carried on one's person are often distinguished from clocks.^[2]

The clock is one of the oldest human inventions, meeting the need to consistently measure intervals of time shorter than the natural units: the day; the lunar month; and the year. Devices operating on several different physical processes have been used over the millennia, culminating in the clocks of today.

Calendar

http://en.wikipedia.org/wiki/Calendar

A calendar is a system of organizing days for social, religious, commercial, or administrative purposes. This is done by giving names to periods of time, typically days,weeks, months, and years. The name given to each day is known as a date. Periods in a calendar (such as years and months) are usually, though not necessarily, synchronized with the cycle of the sun or the moon. Many civilizations and societies have devised a calendar, usually derived from other calendars on which they model their systems, suited to their particular needs.

A calendar is also a physical device (often paper). This is the most common usage of the word. Other similar types of calendars can include computerized systems, which can be set to remind the user of upcoming events and appointments.

A calendar can also mean a list of planned events, such as a court calendar.

The English word calendar is derived from the Latin word kalendae, which was the Latin name of the first day of every month