360 days of mortals make a year
Krita Yuga contains 1,728,000
Tretâ Yuga contains 1,296,000
Dvâpara Yuga contains 864,000
Kali Yuga contains 432,000
The total of the said four Yugas constitute a Mahâ Yuga, 4,320,000
Seventy-one of such Mahâ Yugas form the period of the reign of one Manu, 306,720,000
The reign of fourteen Manus embraces the duration of 994 Mahâ Yugas, which is equal to 4,294,080,000
Add Sandhis, i.e., intervals between the reign of each Manu, which amount to six Mahâ Yugas, equal to 25,920,000
The total of these reigns and interregnums of fourteen Manus, is 1,000 Mahâ Yugas, which constitute a Kalpa, i.e., one Day of Brahmâ, 4,320,000,000