Today I was reading a book " Islam O ManobJaati" - by Md. Enamul Haque. The writer is Khalu to me( My mother's friend's Husband) . He is an civil engr. in Bangladesh Water Development board. One of the articles says. According to Hindu Mythology ( Shree Bhagwat Geeta JothaJoto) Lord Brahma's one day ends when 4 eras circulates 1000 times. the 4 eras & theri lifetime are: SatyaYug ------------------------------ 1,728,000 years TretaYug ------------------------------ 1,296,000 years DwaporYug----------------------------- 864,000 years Kalyug ----------------------------- 432,000 years total = 4,320,000 * 1000 years = 4,320,000,000 years for Brahma's One day.( 4.32e9 years) for total day-night= 8,640,000,000 years . The age of Brahma is 100 years. so the age of brahma is 100*365*8.64e9= 3.15e14 years . then Brahma will die. But Bhagwan has infinite age. So Brahma is not ALLAH. Bhagwan is ALLAH. but what is Brahma? The writer says Brahma is time. more of it: Shri Rama Chandra was in TretaYug and Shri Krishna was in start of Kalyug. Today is 5000 years of Kalyug ( started on 3100 BC).