I love to keep a giant classroom calendar not only to see when the month ends, but when the marking period ends. For example, from the calendar on the right you can see that the marking period is exactly six weeks long. More importantly, the students can see this as well.
Whenever we plan projects or quizzes, I ask them, "When do you think you can have this ready?" or "When will you be ready for that quiz?" We all look at the calendar together and choose the most logical dates. This is also when I find out if other teachers are also assigning a project on the same day as I am and so I adjust.
"What languages are those?"
"Why did you pick those?"
"How do you pronounce that?"
Some students are very enthusiastic to learn English, but we also have students who feel that English is imposed on them and for that reason, they might resent having to learn it. It might be an odious task for them. Having the days of the week in different languages is a small message to the students: "It's ok to learn new languages. New languages CAN be fun. New languages can be exciting!"
After all, what's the point of doing anything if you aren't having fun with it?