The first era of the drama of life on earth (including human) opened as a full-fledged on-going concern. The first act of that drama featuring men, women and children of a divine calibre, lasting 1,728,000 years is rightly known as the Kruta Yuga. Kruta in Sanskrit implies ready-made. The next era lasting 1,296,000 years was known as the Treta because it started with only three parts of its original goodness. Lord Rama emerged as the hero of the world-war fought in that era, against Ravan, a coercive demoniac world-sovereign. The era after that was known as Dwapar (from 'dwi' in Sanskrit meaning 'two') because it started with only two parts left of the original divine excellence. That era lasted for 864,000 years. The Kaurava Pandava World War was fought at the end of the Dwapar era. Now humanity is passing through its last era of 432,000 years duration, of which 5090 years have already elapsed. The present era is known as Kali i.e., a period of rising and crime and strife. We already see its all round baneful effects in the breakup of families and rising unconcern even between father and son and husband and wife. It may be observed that the cosmic machine created by divinity is like any other machine which gives a trouble-free service for a long initial period. Succeeding era's are comparatively shorter (each by 432,000 years).

The information that you have published is flawed. There is no account/proof of so many years. The history avialble in all the libraries is only for 2500 years.The whole kalpa is only 5000 +/- years. This is a complete imagination with out understanding the kalpa cycle.There are only 4 yugas as symbolized by the Swastik. Satyug, Tretha, Dwapar & Kali yug & in between kaliyug & satyug there is a small age called confluence or sangam yug.The other information that you have shared is quiet interesting on Islam & there is lot of proof to prove.
On the above area of yuga, if you would like to know more please get in touch with me at kand_72@yahoo.com & we can discuss with proof.