Answer:
It regulates our daily movements, but it feels no interest in our lives. It directs us when to come and go, but does not care if we pay attention. What is it?
Power enough to smash ships and crush roofs. Yet it still must fear the sun.
Sharp and long, flag of the world. What is it?
Alive without breath, As cold as death, Clad in mail never clinking, Never thirsty, ever drinking
What has 4 legs in the morning, 2 legs in the evening and 3 legs in the night?
I start with T end with T and within me is T.