The Supreme Court is available to the public from 9 a.m. to 4:30 p.m., Monday through Friday, excluding federal holidays. Visitors are welcome to enter the courtroom while it is in session. Attendance at hearings and conferences before the court is not required, but may be helpful for informed discussion of cases later considered by the court. The court's staff will also make themselves available to visitors over the weekend and on legal holidays, from 9 a.m. to 4:30 p.m., to take their questions about the current court calendar and offer advice on how to best proceed with cases before the court. Visitors should note that only one person at a time is allowed in the courtroom. To avoid delay, please come early or call ahead to ensure availability of courtrooms. Courtroom rules require that people wear clothes that do not have logos, stripes, or other identifying marks that might distract from the proceedings. Also, shoes must be removed inside the door of the courtroom. Supreme Court police officers are present to ensure that the rules are followed and that visitors comply with court orders to leave the building or stay away from certain areas of the court. These officers can deny entry if necessary.