Answer:
They come out at night without being called, and are lost in the day without being stolen. What are they?
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
What is always coming every day, but never arrives until the next?
It's tough as nails, Or soft as snow. People use it for their rink, Some just put in their drink.
I reach for the sky, but clutch to the ground. Sometimes I leave, but I am always around
You can always see it, but it's too far away to touch. Mountains rest on it, and at sea it surrounds you. What is it?