405 ILCS 5/3-611
Within 24 hours, excluding Saturdays, Sundays and holidays, after the respondent's admission under this Article, the facility director of the facility shall file 2 copies of the petition, the first certificate, and proof of service of the petition and statement of rights upon the respondent with the court in the county in which the facility is located. Upon completion of the second certificate, the facility director shall promptly file it with the court and provide a copy to the respondent. The facility director shall make copies of the certificates available to the attorneys for the parties upon request. Upon the filing of the petition and first certificate, the court shall set a hearing to be held within 5 days, excluding Saturdays, Sundays and holidays, after receipt of the petition. The court shall direct that notice of the time and place of the hearing be served upon the respondent, his responsible relatives, and the persons entitled to receive a copy of the petition pursuant to Section 3-609.
405 ILCS 5/3-611