What starts the Illinois Supreme Court petition-for-leave period?

Establish that discretionary Supreme Court leave is available for this decision under Rule 315(a).

Identify the actual judgment entry and every timely rehearing or Rule 23 publication motion and its disposition.

Select the actual governing event under Rule 315(b), including any modified decision or actual extension order.

1. Establish that discretionary Supreme Court leave is available for this decision under Rule 315(a).
2. Exclude the independently established triggering day and count intermediate calendar days under 5 ILCS 70/1.11. A filing, entry, effective service or previously established due date must come from its actual record. Do not substitute one event for another. Select the applicable event before counting; do not assume every corrected opinion restarts the period.
3. Check statutory holidays and the proper court’s actual calendar.
4. Complete the particular act in the proper court.

Section 1.11 excludes a final Saturday, Sunday or statutory holiday and consecutive excluded days. Section 17(a) of the Promissory Note and Bank Holiday Act includes Pulaski Day, Good Friday and the general election for members of the House of Representatives. Check proclamations, the proper court’s actual calendar and clerk access separately. The bundled Illinois calendar covers 2026 and 2027.

This question requires judgment, rehearing and publication-motion classification and actual dispositions. The guarded preset cannot establish every material Rule 315(b) branch from one undifferentiated input.

Supreme Court leave is discretionary and eligibility matters

Rule 315(a) addresses cases not appealable as of right. Its Workers’ Compensation Commission division branch requires at least two panel judges to join the stated substantial-question certification. The prescribed certification request has its own rehearing-time condition.

Timely rehearing selects the actual disposition branch

Rule 315(b)(1) uses denial entry, the entry of a modified decision issued on denial, or judgment entry on granted rehearing as applicable. A corrected opinion without a rehearing petition does not extend the leave period.

A timely Rule 23 publication motion changes its branch

Rule 315(b)(2) uses opinion filing when the publication motion is granted or the order denying publication when it is denied. Filing that motion does not invalidate a previously filed leave petition. The Appellate Court clerk transmits the stated motion and disposition notices to the Supreme Court clerk.

Extensions are exceptional and require actual relief

Rule 315(b)(1) allows the Supreme Court or a judge to extend on motion only in the most extreme and compelling circumstances. Do not assume an extension from the request alone.

The optional answer uses petition expiry

Rule 315(f) permits an answer within twenty-one days after the time for filing the petition expires, or actual further time granted. It uses petition expiry, not early actual petition filing, and prohibits a reply to that answer.

• The calculator does not decide appealability, disputed facts, sufficiency of a filing or whether the court grants relief.
• Check the governing edition and actual orders. A current rule does not establish every historical appeal’s timetable.

• Establish that discretionary Supreme Court leave is available for this decision under Rule 315(a).
• Identify the actual judgment entry and every timely rehearing or Rule 23 publication motion and its disposition.
• Select the actual governing event under Rule 315(b), including any modified decision or actual extension order.
• Rule 315(a) addresses cases not appealable as of right. Its Workers’ Compensation Commission division branch requires at least two panel judges to join the stated substantial-question certification. The prescribed certification request has its own rehearing-time condition.
• Rule 315(b)(1) uses denial entry, the entry of a modified decision issued on denial, or judgment entry on granted rehearing as applicable. A corrected opinion without a rehearing petition does not extend the leave period.
• Rule 315(b)(2) uses opinion filing when the publication motion is granted or the order denying publication when it is denied. Filing that motion does not invalidate a previously filed leave petition. The Appellate Court clerk transmits the stated motion and disposition notices to the Supreme Court clerk.
• Rule 315(b)(1) allows the Supreme Court or a judge to extend on motion only in the most extreme and compelling circumstances. Do not assume an extension from the request alone.
• Rule 315(f) permits an answer within twenty-one days after the time for filing the petition expires, or actual further time granted. It uses petition expiry, not early actual petition filing, and prohibits a reply to that answer.
• File the petition with the Supreme Court clerk. Include the Rule 315(c) prayer, judgment and rehearing dates, review points, fair record-supported facts, concise argument and required appendix. Rule 315(d) generally limits it to twenty pages or 6,000 words, with stated exclusions, and incorporates brief preparation, service and filing requirements. Use the proper clerk and required filing format. Rule 9 ordinarily requires electronic filing in civil cases, subject to its exceptions and exemptions. Rule 9(f) ordinarily uses submission before midnight in the court time zone, unless a statute, rule or order sets a particular time. A submission when the clerk is closed is ordinarily stamped on the next open day. Current Rule 9(f) provides separate five-court-day motions for a rejected filing or qualifying technical failure; establish the actual notice, failure, corrected document and required proof. Rule 373 ordinarily uses actual receipt, with its mail or carrier exception limited to filings excepted or exempt from electronic filing. Its carrier branch requires delivery for receipt within three business days and Rule 12(b) proof. Filing and service remain separate acts.