Time

**Time**
=**Big Bang**=

Hydrogen and Helium.
=**Time Keeps On Slippin’ Assignment**=

====1) The Gregorian calendar, also known as the Western calendar, or Christian calendar, is the internationally accepted and used civil calendar. It was introduced by Pope Gregory XIII, after whom the calendar was named. ====

==== 2) A leap year (or intercalary or bissextile year) is a year containing one extra day (or, in the case of Lunisolar calendar, a month) in order to keep the calendar year synchronized with the astronomical or seasonal year. ====

==== 3) Lunar Calendars - The Catholic Chruch maintained a tabular lunar calendar, which was primarily to calculate the date of Easter, and the lunar calendar required reform as well. A perpetual lunar calendar was created, in the sense that 30 different arrangements for lunar months were created. The tables can find the age of the moon on any date, and calculate the date of Easter. ====

==== Julian calendar - The Julian calendar assumes that the time between vernal equinoxes is 365.25 days, when in fact it is presently almost exactly 11 minutes shorter. ====

==== 5) BCE means Before Common Era. For example 400 BC is 400 BCE. ====

==== 6) AD meaning Anno Domini, the year of Our Lord referring to the year of Christ’s birth. This is also a year 1. There is no year 0. ====

==== 7) CE is a recent term. It refers to Common Era and is used in place of A.D. the dates are the same ie 2009 AD is 2009 CE. ====

=== __8) MYA is type genus of the family Myacidae. x ( Million Years Ago) __ ===

9) There is 22 periods. [|BIG BANG : Formation of the Universe] , [|FORMATION OF EARTH] , [|CAMBRIAN : Explosion of Life on Earth] , <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|PERMIAN : Largest Mass Extinction] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|MESOZOIC : Age of Dinosaurs] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|CENOZOIC : Age of Mammals] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|STONE AGE : The Human Era] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|ICE AGE : Extintion of Large Mammals] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|NEOLITHIC : First Permanent Settlements] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|BRONZE AGE : First Pharaos] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|IRON AGE : Start of the Trojan War] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|HELLENISTIC PERIOD] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|ROMAN PERIOD] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|BYZANTINE PERIOD] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|MIDDLE AGES] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|RENAISSANCE] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|REFORMATION] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|ENLIGHTENMENT] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|INDUSTRIAL REVOLUTION] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|20th CENTURY] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|21st CENTURY] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">, <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">[|FUTURE] <span class="heading3" style="color: #333333; font-family: Arial,Helvetica,sans-serif; font-size: 16px; text-decoration: none;">.

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">10) Eon - An indefinite and very long period of time, often a period exaggerated for humorous or rhetorical effect. A unit of time equal to a billion years. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">b) Epoch - A period of time in history or a person's life, typically one marked by notable events or particular characteristics. The beginning of a distinctive period in the history of someone or something. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">c) Era - A long and distinct period of history with a particular feature or characteristic. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">d) Age - The length of time that a person has lived or a thing has existed. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">11) Stonehenge, Aztec calendar stone, Ice-age hunters in Europe ==== ==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">Egyptian calendar, Babylonians calendar,  ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">12) a) China- Incense Alarm Clock - Candles and sticks of incense that burn down at approximate predication speeds were also used as to estimate the passage of time. <span class="a" style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;"> When the burning incense burnt and broke the threads, the bells fell down at preset interval to give an alarm. ====

==== <span class="a" style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">b) Hour Glass - An hour glass filled with fine sand, poured through a tiny hole, at a constant rate. indicated a predetermined passage of time. An hour glass is basically 2 bubbles of glass with a narrow middle; wood is used to close off the sand. The sand is measured and sealed and the hour glass is turned over and over. This type of clock was the first one to not be dependent on the weather. It's used for short periods of time such as speeches, sermons, watch duty, cooking, and at sea to calculate one's position. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">13) When well-regulated mechanical clocks became widespread in the early 19th century,[citation needed] each city began to use some local mean solar time. Apparent and mean solar time can differ by up to around 15 minutes (as described by the equation of time) due to the non-circular shape of the Earth's orbit around the sun. Mean solar time has days of equal length, and the difference between the two averages to zero after a year. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">14) <span style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 17px;">Atomic clocks are the most accurate time and frequency standards known, and are used as primary standards for international time distribution services, to control the wave frequency of television broadcasts, and in global navigation satellite system such as GPS. <span style="background-color: initial; color: inherit; font-family: Arial,Helvetica,sans-serif; font-size: 17px;">[] ==== ==== <span style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 17px;">(Counting more ticks over a given interval, Gibble explained in, [], allows you to make a more accurate clock.) In a standard atomic clock ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">15) A time zone is a region on Earth that has a uniform standard time for legal, commercial, and social purposes. In order for the same clock time to always correspond to the same portion of the day as the Earth rotates (for example, the sun being at its highest point every day around noon), different places on the Earth need to have different clock times. Time zones have been used in modern times so similarly situated cities can keep exactly the same time, for simplicity and ease of communication. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">16) The Prime Meridian is the meridian (line of longitude) at which the longitude is defined to be 0°. ==== ==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">The Prime Meridian and its opposite the 180th meridian (at 180° longitude), which the international Date Line generally follows, form a great circle that divides the Earth surface into the Eastern and Western Hemispheres. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">17) It will be 11:00 AM in Toronto. It will be 4:00 AM in London. It will be 8:00 PM in Moscow. It will be 1:00 AM in Tokyo. It will be 6:00 AM in Hawaii. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">18) Daylight Saving Time – often referred to as "Summer Time", "DST" or "Daylight Savings Time" – is a way of making better use of the daylight by setting the clocks forward one hour during the long days of summer, and back again in the fall. Saskatchewan - Traditionally does not adopt Daylight Saving Time. Most of Saskatchewan uses Central Standard Time all year round. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">19) Year zero" does not exist in the Anna Domini system usually used to number years in the Gregorian calendar and in its predecessor, the Julian calendar. In this system, the year 1 BC is followed by AD 1. However, there is a year zero in astronomical year numbering (where it coincides with the Julian year 1 BC) and in ISO 8601:2004 (where it coincides with the Gregorian year 1 BC) as well as in all Buddhist and Hindu calendars. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">20) 2010 marked the end of a decade and 2011 started a new decade because one decade is ten years. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">21) In general, the Judae-Christian concept, based on the Bible, is that time is linear, beginning with the act of creation by God. The general Christian view is that time will end with the end of the world. Others suggest that time is like a ray, having a beginning but going on forever into the future. Linear Time: A time base that makes the electron beam of a cathode-ray tube move at a constant speed along the horizontal time scale. ====

==== <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px;">22) Ancient cultures such as Incan, Mayan, Hopi, and other Native American Tribes, plus the Babylonians, Ancient Greeks, Hinduism, Buddhism, Jainism, and others have a concept of a wheel of time, that regards time as cyclical and quantic consisting of repeating ages that happen to every being of the Universe between birth and extinction. <span class="yshortcuts cs4-visible" style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 17px;">Cyclical Time: Moving in cycles. ==== = =