Answer:
Alone I am 24th with a friend I am 20. Another friend and I am unclean.
I wear a red robe with staff in hand and a stone in my throat.
Sometimes I annoy you, sometimes you can't live without me. But no matter how hard you try, you can't destroy me. What am I?
I make a loud sound when I'm changing. When I do change I get bigger but weigh less. What am I?
Cloud is my mother, wind is my father. What am I?
No matter how little or how much you use me, you change me every month.