Diary Entry Realising I don't need to date my entries

There’s a timestamp on them, but I put 01/07/2020 on my last entry. Also, I don’t see any rules on diaries. Should they just be anything I want or...

Diary Entry 01/07/2020: I have discovered OSM diaries.

dear diry today i am discover the open street map diary feature why do this exist? is this published to the whole world? what is the point of this?...