Age of Brahma

In Hinduism, world periods are measured in terms of days and nights of Brahm€, kalpas and yugas. A day of Brahm€ or a kalpa is equivalent to 4,320,000,000 years, while a night of Brahm€ is of equivalent duration. Thus a day and night totals 8,640,000,000 years. A year of Brahm€ then is 3,110,400,000,000 years, and 100 such years is the Age of Brahm€, which is 311,040,000,000,000 years. This is the mah€-manvantara, or age of manifestation, to be followed by mah€-pralaya or period of non-manifestation. See also YUGA.