How Brahma the Creator designed Age of Universe & Life Cycles
Creator of this Universe Brahma dev lives a very long long life. From Brahma's Perspective our lives are very very very very short. Brahma's 1 Kalpa (daytime = 12 hours) is ours 4.32 billion years & his night also the same. That means His whole day (24 hours) constitute ours 8.64 billion years. His 30 days or 1 month is ours 259.2 billion years. His 12 months or 1 year is ours 3.1104 trillion years. 50 years of Brahmaa = 1 Paraardha. 2 Paraardhas = 100 years of Brahmaa (the lifespan of Brahmaa) is ours 311.04 trillion years. Brahmaa in his day (daytime) creates 14 Manus. Lifespan of a Manu is called a Manvantara. 1 Manvantara (306.72 million years has 71 Chaturyugas or Divyayugas. 1 Chaturyuga or Divyayuga (4.32 million years) has 4 yugas and they are:- (1) Satyayuga = 1,728,000 years (2) Dwaaparayuga = 1,296,000 years (3) Tretaayuga = 864,000 years Kaliyuga = 432,000 years So, we are in Brahmaa's 51st year, out of 14 Manus we are in 7th Manu's reign named Vaivasva