A manvantara, in Hindu cosmology, is a cyclic period of time identifying the duration, reign, or age of a Manu, the progenitor of mankind. In each manvantara, seven Rishis, certain deities, an Indra, a Manu, and kings are created and perish.

What is manvantara and kalpa?

Each Manu reigns over a period called a manvantara, each lasting for 71 chatur-yugas (306.72 million years). A total of 14 Manus reign successively in one kalpa (day of Brahma).

What is the current kalpa?

… characterized by great cycles (kalpas) of rise and decline, creation and destruction. The kalpa comprises 2,000 mahayugas, which in turn are each made up of four ages, or yugas, of diminishing length. The current age is the fourth yuga, the kaliyuga, of a mahayuga and is to last 1,200…