A: Lectures in France begin at the beginning of September, and you will have the last exams, approximately, at the beginning of February.
Lectures in Germany begin at the beginning of April and they will last up to July, you will have to do exams between July and September.
Lectures in Italy begin at the end of September and they last until the end of December, then you will have your exams between January and February.
Notice that between the semesters in France and Germany (end of March) you will participate to a Spring School.