In Slovakia, the closest thing to prom is Stužková, an occasion when the seniors get together with their parents, partners and teachers to celebrate their upcoming graduation. It takes place in November or December. Each of the students receives a green ribbon with their name on it (thus the name "Stužková", the "Ribbon Ball"). The principal and the class teacher are given big green ribbons as well. Many of the students wear this ribbon on their jackets or shirts until graduation. Stužková typically includes a banquet, skits and songs prepared by students, and, of course, dancing. Men wear formal suits and women formal dresses. One week before Stužková is a ceremony of Pečatenie triednej knihy (Sealing of the grades book) so that teachers will not be able to give tests or do examinations of the students until Stužková. It is connected with some story and recorded on camera and then used as a part of the video of Stužková. It usually starts at 6 p.m. and ends in the early hours of the next morning (4a.m.).