7日 if we count days
Could you tell me please how to pronounce these words: 4日、 7日 and 9日 when we refer to counting days (NOT to 4, 7th and 9th day of the month).
Is it
4日:しにち/or still よっか
7日:しちにち/or still なのか
9日:きゆうにち/くにち/or still ここのか？

Thank you in advance!

Question

7日 if we count days
Could you tell me please how to pronounce these words: 4日 、 7日 and 9日 when we refer to counting days (NOT to 4, 7th and 9th day of the month). 
Is it 
4日:しにち/or still よっか
7日:しちにち/or still なのか
9日:きゆうにち/くにち/or still ここのか ？

Thank you in advance!

Answer

When we count days,we say　1日（ついたち）２日（ふつか）３日（みっか）４日（よっか）５日（いつか）６日（むいか）７日（なのか）８日（ようか）９日（ここのか）１０日（とうか）.

Answer

Pronouncing when we count is the same.
4日: よっか
7日: なのか
9日: ここのか