Why do you suppose The Creator did not bless the second day?

Verse 31--and it was all good.

Nebula 1:1 "Long long time ago, there was void in the universe, there was only darkness and non-existence far beyond what humans can imagine. Then something happen, the Time Bang. Since then, Time has become the lord of the universe. He enslaves everyone, strong and weak, and everything. Everyone that tries to disobey his will, is punished to the everlasting abyss of unconsciousness. Through him, everything happens. Through him, all things are derived. After some million cycles of his reign, Life was born, by an inevitable product of two titan twins: Chance and Chaos. Men has been proud of themselves since they acquired their intellect, but it's always to Time they will finally bow and return, no matter how hard they try to escape. Some mortals travel the seven seas in search for everlasting live, they refuse to be withered by the almighty Time. They also create stories of the afterlives to comfort themselves but Time never waits, and never gives mercy. By Time, things grow and fall. Mankind will seek for any means to manipulate time for their own selfish ambition, but little do they know, it's not easy to play God"

Same reason Sauron did not bless his orcs.

8 When Sauron left his Tower he went straight to the top of the mountain, without blessing his Orcs. 9 The orcs were disappoint.

I don't think he blessed any day...he saw they were good...

All it has done is Good...

"The Rock, perfect is his activity,

For all his ways are justice.

A God of faithfulness who is never unjust;

Righteous and upright is he" (Deuteronomy 32:4. Bible).

Who told you he didn't? Who was there to know?