I found something to be really interesting.
This is the link:
www.angelfire.com/in/sidhu/juga.htmlThis is some selected information:
In the Sri Guru Granth Sahib Ji many a times guru ji mentions about the satjug treatehjug ,dwapurjug,and kaljug.Bani of Bhai Gurdass ji also mentiones about the four jugas.Direct translation into english it means golden age ,silver age, bronze age, iron or dark age.These present age is the age of darkness .Which accoding to some historians started on February 18, 3102 B.C according to the Gregorian calendar.
The ancient scriptures view history as cyclical in character, with vast repeating series of ages. Each age has its own particular qualities. The ancient scriptures describe a number of cycles within cycles. Discussions of these cycles can become confusing because different cycles are measured in different types of units. For example, the cycles are often described in units of deva(demigods) years, each of which equals 360 human years.
The following description starts with the smaller cycles and works up to the larger ones. The length of each cycle is given in ordinary human (earth) years, as well other units where appropriate. Large numbers are described using the conventions of American English: thus, a million is a thousand thousand, a billion is a thousand million, a trillion is a thousand billion.
This is based on numerous sources, which are given in the "References" section at the end of this document.
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Maha Yuga
The smallest cycle is called a maha yuga. A maha yuga is 4,320,000 human years. Each maha yuga is subdivided into the following four ages, whose lengths follow a ratio of 4:3:2:1:
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Satya Yuga
This first age is 1,728,000 human years. Also known as the Golden Age or age of Truth. The qualities of this age are: virtue reigns supreme; human stature is 21 cubits; lifespan is a lakh of years, and death occurs only when willed.Dharma in this age had four legs. Gurbani :”Satjug teah maneaho chaleoh balbavan beahioh.” In the satjug the supreme Lord appeared as Balbavan(dwarf incarnate) .Bhagat dhru ji Bhagat pharlad ji appeared in the satjug.
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Treta Yuga
This second age is 1,296,000 human years. Also known as the Silver Age. The qualities of this age are: the climate is three quarters virtue and one quarter sin; human stature is 14 cubits; lifespan is 10,000 years.Dharma in this age had three legs. Gurbani:” Treath teah maneaho raam raghuwans khehaeo” In the treathjug the supreme lord appeared as Sri Raamchand in the Raghu (Sun)Dynasty. note: the ten gurus are from the dynasty of Sri Raamchand ji maharaj, as stated by Guru Gobind Singh ji in the Vichatar Natak in Dasam Granth Sahib ji.
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Dvapara Yuga
This third age is 864,000 human years. Also known as the Bronze Age. The qualities of this age are: the climate is one half virtue and one half sin; lifespan is 1,000 years.Dharma in this age had 2 legs left. Gurbani:”Dawapar krishan murar kansh kirtharath kio,ugarseanh koa raaj abeah bhagtah janh deoh” In the Dvapur yug the supreme appeared as Krishan murar(Sri krishan bhagvan).
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Kali Yuga
The fourth and last age is 432,000 human years. Of which 5100 years have past. Also known as the Iron Age. This is the age in which we are presently living. The qualities of this age are: the climate is one quarter virtue and three quarters sin; human stature is 3.5 cubits; lifespan is 100 or 120 years.(this would continue continue to decrees) Gurbani:”Kaljug paarmanh nanak gorh angad amar kehaeo.sri guru raaj abeychal attal adah purkh farmaeoh”The supreme lord appeared as Guru nanak along with the ten gurus.note:guru nanak dev ji is predicted as the saviour of this age in the hindu scriptures at different places eg.bhavichat puran , simiritis etc. Dharma had one leg left in this age.”Dharm pankh kar udreaia”That also had flown away .”Sharm dharm deoeh pakh khloeah kurh fereah pardan veah lalo.”Sence of shame and religion is gone from this age.People have become shameless and irreligious.The only way to save oneself is to chant Harinaam.”Kalau meah raamnam hai saar”(more will be discussed in the topic on kaljug later) The creation disappears at the end of a maha juga and remains in seed form inside brahma.
