We know the definition of "time" of Augustine of Hippo:

"If no one asks me, I know: if I wish to explain it to one that asketh, I know not" (Conf.).

What is time? Philosophically, what can be said about time in modern times? Even more... does the time exists independent of men, being that man is the only one who can talk about it?

A philosophical definition should be short, deep, concise and logical.