Kali Yuga is associated with the apocalypticdemonKali (who is not to be confused with the goddess Kālī (काली). The "Kali" of Kali Yuga means "strife", "discord", "quarrel" or "contention".
Current Kali Yuga and possible starting dates
There is considerable controversy over the date for the start of the Kali Yuga and its duration. According to the Surya Siddhanta, Kali Yuga began at midnight (00:00) on 18 February 3102 BCE.
According to the astronomer and mathematician Aryabhatta the Kali Yuga started in 3102 BC. He finished his book “Aryabhattiya” in 499 AD in which he gives the exact year of the beginning of Kali Yuga. He writes that he wrote the book in the "year 3600 of the Kali Age" at the age of 23. As it was the 3600th year of the Kali Age when he was 23 years old, and given that Aryabhatta was born in 476 AD, the beginning of the Kali Yuga would come to (3600 - (476 + 23) + 1 (As only one year elapses between 1 B.C and 1 C.E) = ) 3102 BC.