Six -Span of 4 yugas as mentioned in the shastras

Span of 4 yugas as mentioned in the shastras

Four are the ages in the land of Bharata: the krita, treta, dwapara and kali. The krita yuga lasts for 4800 divine years, the treta for 3600, the dwapara for 2400 and the kali for 1200; and, then, another krita begins.

The krita or satya yuga is an age of purity; it is sinless. Dharma, righteousness, is perfect and walks on four feet in the krita. However, from the treta yuga, adharma, evil, comes to the world and the very fabric of time begins to decay. Finally, the kali yuga, the fourth age, is almost entirely corrupt, with dharma barely surviving, hobbling on one foot.

A chaturyuga, a cycle of four ages, is 12,000 divine years, or 365 x 12,000 human years long. Seventy-one chaturyugas make a manvantara; fourteen manvantaras, a kalpa. A kalpa of a thousand chaturyugas, 12 million divine years, is one day of Brahma, the Creator.

8,000 Brahma years make one Brahma yuga; 1,000 Brahma yugas make a savana and Brahma’s life is 3,003 savanas long. One day of Mahavishnu is the lifetime of Brahma

Three hundred and sixty-five human years make one year of the Devas and the Pitrs, the Gods and the ancestors.

(A compilation from the shastras)