Hi @rofikislam! You have have already use date 01/08/2020!
you can only post one diary post in a date. Hope to see , in future you will be aware of this things.

here is the rules,
1000 DAYS OF STEEM : Day 21 - The Diary Game Season 2 has started !

1000 DAYS OF STEEM : Day 19 - The Diary Game Season 2 - FINAL RULES

^{greeting from @tarpan}