Four yugas are equivalent to twelve thousand years of the deities, which occur in a cyclic order---Satya, Treta, Dwapar and Kaliyuga. The periods of these yugas are as follows---
Satya Yuga = 4000 years
Treta Yuga = 3000 years
Dwapar Yuga = 2000 years
Kali Yuga = 1000 years
Total = 10,000 years
Each yuga is followed by the hibernation periods of 'Sandhya' and Sandhyansh, which are as follows
Satya Yuga 400 400
Treta Yuga 300 300
Dwapar Yuga 200 200
Kali Yuga 100 100
Total 1000 years 1000 years
Four Yuga are collectively known as 'Chaturyuga'. A Brahma's day consists of one-thousand such 'Chaturyugas'. Altogether, fourteen Manu appear during this whole period of 1000 Chaturgas or in other words a day of Lord Brahma. Each 'Manvantar' is named after a Manu and is equivalent to little more than 71 Chaturyugas. It also has its own Indra, Saptarishis and other deities. This way, a manvantar is also equivalent to 8,52,000 years of the deities or divine years. Going by the standard of the years of this world a manvantar is equivalent to 30,67,20,000 years. On the basis of the years of this world, a Brahma's day is equivalent to 30,67,20,000 x 14 = 4,29,40,80,000 yrs. This is the period after which a Brahma's day is over and a deluge takes place when all the three worlds becomes devoid of life due to unbearable heat. Lord Brahma then takes rest for the same period (4,29,40,80,000 yrs) which is his night.
After the night is over, Lord Brahma again commences his creation. So, this process continues for the whole period of Brahma's life span, i.e. 100 yrs." Bheeshma requested Sage Pulastya to describe how Lord Brahma created life in the beginning of the present Kalpa.
Pulastya replied--- At the end of the previous kalpa when Lord Brahma awakened from his sleep, he found the whole earth submerged in water. He meditated on Lord Vishnu, who took the incarnation of 'Varah' and retrieved the earth and established it in its original position. Lord Brahma then created all the four worlds--Bhurloka, Bhuvarloka, Swargloka and Maharloka and divided the earth into seven islands.
First of all, Lord Brahma created the 'Mahattatva'. After that he created the 'Tanmatras', Indriyas (sense-organs), the immovable things like mountains, rivers, animals, deities, demons, human beings etc.
this is how the world was created accroding 2 hindu dharma.
*king*