A Yuga is a cosmic epoche.
We are in the 51st year of Brahma, who lives 100 Brahma years (2 Parardhas). 1 Parardha are 50 years.
Within this 51st year we are in the 1st day, Varaha Kalpa (in the 2nd Parardha).
Within this 1st day we are in the 7th Manvantara.
Within this 7th Manvantaras we are in the 28th Mahayuga.
Within this this 28th Mahayuga we are in Kali Yuga.
Duration of the four Yugas (Chatur Yuga)
| Satya – Gold | 1,728,000 years |
| Treta – Silver | 1,296,000 years |
| Dvapara – Bronze | 864,000 years |
| Kali – Iron | 432,000 years – started on February 18th 3102 B.C. |
| Total | 4,320,000 Jahre – 1 Mahayuga |
71 Mahayugas are 1 Manvantara.
14 Manvantaras are 1 Kalpa.
1 Kalpa lasts 4,320,000,000 yeras, the current is Varaha Kalpa.
In Sayta Yuga – humans lived up to 100,000 years,
in Treta Yuga – up to 10,000 years,
in Dvapara Yuga – up to 1,000 years,
in Kali Yuga- they live up to 100 years.
Each Manvantara is ruled by a Manu, the premordial man, and an Indra, the king of Gods. Indra is a title, not a name.
The Yugas in detail are subject of the Puranas. The following is from Agni Purana.
| Manvantara | Manu | Indra |
| 1 | Svayambhuva | Shatakratu |
| 2 | Svarochisha | Vipashchita |
| 3 | Uttama | Sushanti |
| 4 | Tapasa | Shikhi |
| 5 | Raivata | Vitatha |
| 6 | Chakshusha | Manojava |
| 7 – the current | Vaivasvata | Purandara |
| 8 | Savarni | Bali |
| 9 | Dakshasavarni | Adbhuta |
| 10 | Brahmasavarni | Shanti |
| 11 | Dharmasavarni | Gana |
| 12 | Rudrasavarni | Ritadhama |
| 13 | Rauchya | Divaspati |
| 14 | Bhautya | Shuchi |