1. Diwali will be here in 24 days.
2. Twenty-four days to go until Diwali.
Can we say:
3. "A few more than twenty days are remaining for Diwali?"
Didn't I suggest, only yesterday, that you number sentences you are suggesting?
Sentence 1 is OK.
#2 is not a complete sentence. You need two words before "twenty-four".
Sentence 3 is completely incorrect.