Answer:
I am all around yet to me you are half blind. Sunlight makes me invisible and difficult to find.
I go up but never come down. What am I?
They come out at night without being called. They are lost in the day without being stolen. What are they?
When the clock has no angle, I will own yesterday, tomorrow and tonight. What am I?
You throw me out when you use me and take me in when you are done.
No matter how little or how much you use me, you change me every month.