I work shifts. So if DP wants to go out, he will need to know what I'm working. Simple.
So, I get asked 'what are you doing at the end of September?'.
So, I respond 'What do you mean? On the 30th?'
'No, on the 29th'
Why can't he just ask what I am working on the 29th? Why does it have to be a difficult extraction of information so I can be asked the correct question for him to receive the correct information that he needs to know?