What Am I Riddles

Question: If you have me, you want to share me. If you share me, you haven't got me. What am I?

Question: You will see me every night sometimes i am scary and sometimes not What am I

Question: Given to all man then taken away, you can beg for more time but I never stay What am I?

Question: I have numbers on my face but can't find 13 any place. What am i?

Question: You can feel me but you can't touch me You can give me but you can't take me What am I ?