FWIW this last year I found was a calendar, from Officeworks, I think family calendar
It's hard to see the detail in the link, but it is 8 columns wide. The left hand column has the day and date going down vertically and the other 7 columns are blank, so each day/date has 7 blank squares you can fill in horizontally. Allocate each family member one column, and you can see at a glance who has things on at the same date.
It is only one month at a time, but I tried an office wall planner and it didn't work for me. I kept finding the family would all have things on the same day and I'd run out of space! Having a space for each one of them has been the best so far.