| Indian Traditional System | Satya | 1,728 000 | Golden Age | | Treta | 1,296 000 | Silver Age | | Dwapara | 864 000 | Bronze Age | | Kali | 432 000 | Iron Age | | Maha Yuga | 4,320,000 | This is one cycle (4.32 million years) | | | 1000 | | | Kalpa | 4320.000.000 | Thousand maha yugas (4.32 billion years) | In India's traditional system we are 5000 years into the age of Kali. | Big Bang : | According to mordern science and its present estimate the physical universe came into existence some 20 Billions years ago. | Prominent Time Cycles Based on planet Earth's rotation around its axis | Sunrise to Sunset appx.12 hrs | - | One day of humans | | Sunset to Sunrise appx.12 hrs | - | One night of humans | | A cycle of 24 hrs | - | One day & night of humans. | Based on Moon's revolution around the Earth | 14/15 days of the bright fortnight | - | One day of the Pitris | | 14/15 days of the dark fortnight | - | One night of the Pitris | | A cycle of 28/30 days | - | One day & night of the Pitris | Pitris are human ancestors who dwell on Bhuvar Loka or astral plane. They dwell on the astral counter part of our physical solar system. Based on the Earth's revolution around the Sun As the Earth moves around the Sun in its orbit the Sun appears to move sometimes northward and sometimes southward. | Six months sun's movement to the north (Uttarayana) | - One day of the Deities | | Six months sun's movement to the south (Dakshinayana) | - One night of the Deities | | A cycle of appx. 360 days | - One day & night of the Deities | Deities or Devas are advance angelic beings who have a governing role in human life and they dwell in Heaven or Lower mental plane, Svara Loka. Based on the Sun's revolution around a Black Hole | Ascending cycle 12000 years | - | Human consciousness rises higher | | Descending cycle 12000 years | - | Human consciousness declines lower. | | A cycle of appx. 24000 years | - | Human civilization passes through an upward phase of evolving consciousness and a downward phase of declining consciousness. | |