Answer:
What is the beginning of eternity the end of time and space the beginning of every end and the end of every race?
What is made of wood, but can't be sawed?
Iโm where yesterday follows today. And tomorrowโs in the middle. What am I?
What happens when you throw a green stone into the Red Sea?
I am tomorrow's yesterday and yesterday's tomorrow. What am I?
No matter how little or how much you use me, you change me every month.