Red letter days

Dear students,

It is an important date in the Anglosaxon world today.

I would like you to do some research.

What day is it today?
Where is it celebrated?
What does it consist of?
And any other things you want to add about it.

Prepositions

It is well known that prepositions are a rather hard task when we study English. Let's see if this can be of any help.