When do you have a day off?
Which day are you taking a day off?
Do you have a day off on Saturday?
Which day of next week you are on leave?
Tomorrow, shall we go to the gym together?
On Sunday, shall we have a meal together?
Which day are we going for swimming?
Which day of next week are you coming out?
Tomorrow morning, shall we have breakfast together?
On Saturday night, shall we go to the gym together, then have a night snack?