YOU SAID:

why is the sky blue when its day and the sky blue when its night

INTO JAPANESE

昼の空はなぜ青く、夜の空は青くなるのか

BACK INTO ENGLISH

Why is the sky blue during the day and blue at night

INTO JAPANESE

空はなぜ昼も青く、夜も青く見えるのか

BACK INTO ENGLISH

Why is the sky blue during the day and blue at night