Illinois Summons-20 Day is a legal document that is issued by the Circuit Court of an Illinois county. It is a notice to the defendant that a lawsuit has been filed against them and that they must appear in court within twenty days to respond. The summons will include the time and place of the hearing, the name of the plaintiff and defendant, the complaint number, and a statement of the relief sought by the plaintiff. There are two types of Illinois Summons-20 Day: Regular Summons and Summons for Order of Protection. Regular Summons is sent to a defendant to summon them to a hearing or trial. Summons for Order of Protection is a special type of summons that is issued when a plaintiff is seeking an Order of Protection.