Idul Fitri

Today is the beginning of Idul Fitri, the Muslim holiday that ends the fast of Ramadan.  It is party time!  But all last night we heard the chanting of the Qur'an, most likely from the large mosque that borders the university inn where we are staying.  That did not put us in the mood.  I wonder if it was Sufi chanting.  That sort of thing also seems to be present on some of the television shows.  Except for American cartoons, we seem to have the "Muslim package" on our TV here.  But it's all part of the learning experience. 
Next week we are invited to the university celebration of Idul Fitri, since it goes on for at least one more week.  I asked what happens when the whole university gathers in the "Dome," (like our convocation center), and our hosts told me that people shake hands, eat varieties of foods, and make gestures of forgiveness to one another.  This element we had not heard of before, and it is really impressive.  When do Christians ritually do this act of forgiveness?