Illinois Summons-30 Days is a legal document issued by a court in the state of Illinois that orders a defendant to appear in court and answer to a civil lawsuit within 30 days from the date of service. The summons serves as official notification that a lawsuit has been filed against the defendant and informs the defendant of the date, time, and location of the court hearing. There are two types of Illinois Summons-30 Days: a Process Server Summons and a Sheriff Summons. The Process Server Summons is served by a third party, such as a private process server or a registered process server. The Sheriff Summons is served by an officer of the court, such as a sheriff, deputy sheriff, or marshal.