Birth Of Brahma.

Water is known as "Naar", because it is born out of "Nar" (Man), that is why the one that's born early is known as Narayan. Manu Smiriti 1/12
In fact the creator of the universe Parmatma remains invisible in this world.  The main base of eternal and true and false basic nature is known as Braham when He is along with  nature. Manu Smiriti 1/13
Brahma is born out of Braham, that's why named Brahma.
Brahma after living in the egg for one year ,  broken the egg with His power of contemplation. Manu Smiriti 1/14
One year of Brahma is equal to 31,10,40,00,00,000 human years.