Kali Yuga (Sanskrit: कलियुग, translit. kaliyuga, lit. 'age of Kali') is the last of the four stages (or ages or yugas) the world goes through as part of a 'cycle of yugas' (i.e. Mahayuga) described in the Sanskrit scriptures.[1] The other ages are called Satya Yuga, Treta Yuga, and Dvapara Yuga.
Kali Yuga is associated with the demon Kali (not to be confused with the goddess Kālī). The "Kali" of Kali Yuga means "strife", "discord", "quarrel" or "contention".
According to Puranic sources,[2] Krishna's departure marks the end of Dvapara Yuga and the start of Kali Yuga, which is dated to 17/18 February 3102 BCE.[3]
And this other website describes Kali Yuga as:
The Hindus believe that we're living in the Kali Yuga, an apocalyptic Dark Age ruled by the demon Kali, the source of all evil and destruction. The Kali Yuga, also known as the "Age of Vice," is a period of warfare, chaos, social decline and spiritual decadence brought about by Man's separation from the gods. Kali himself is frequently pictured as a deranged figure dancing on corpses and wearing human heads as jewelry. I don't believe in demons, but this bloodthirsty lunatic with ten arms is the perfect symbol of human history.
Some writers use the term Kali Yuga to mean "end times" or the "last days," but that isn't accurate. The Hindus see Time as a cycle of four ages or Yugas known as the Yuga Cycle. The other three periods are called the Satya Yuga, the Treta Yuga and the Dvapara Yuga, and they all go spinning around like a cosmic ferris wheel. So the Kali Yuga isn't the end of the world. It's just the end of one cycle and the beginning of the next..........
When will Kali Yuga end?