krtam treta dvaparam ca
kalis ceti catur-yugam
divyair dvadasabhir varsaih
maitreyah uvaca--Maitreya said; krtam--the age of Satya; treta--the age of Treta; dvaparam--the age of Dvapara; ca--also; kalih--the age of Kali; ca--and; iti--thus; catuh-yugam--four millenniums; divyaih--of the demigods; dvadasabhih--twelve; varsaih--thousands of years; sa-avadhanam--approximately; nirupitam--ascertained.
Maitreya said: O Vidura, the four millenniums are called the Satya, Treta, Dvapara and Kali yugas. The aggregate number of years of all of these combined is equal to twelve thousand years of the demigods.
The years of the demigods are equal to 360 years of humankind. As will be clarified in the subsequent verses, 12,000 of the demigods' years, including the transitional periods which are called yuga-sandhyas, comprise the total of the aforementioned four millenniums. Thus the aggregate of the above-mentioned four millenniums is 4,320,000 years.