Most wall calendars show 3 months (current month large, previous and next small), precisely because it's so common to want to check the day of a recent or (more commonly) upcoming date.
How do I know how to set the current month, and how do I know how to advance to the next month?
It feels like I'm missing something.
On the first of every month you drag it so that the number 1 lines up with the current day of the week
Oh, so I have to check another calendar/date display device. Right.