25 CFR § 580.6 - How is time computed?

---
identifier: "/us/cfr/t25/s580.6"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "25 CFR § 580.6 - How is time computed?"
title_number: 25
title_name: "Indians"
section_number: "580.6"
section_name: "How is time computed?"
chapter_name: "NATIONAL INDIAN GAMING COMMISSION, DEPARTMENT OF THE INTERIOR"
subchapter_number: "H"
subchapter_name: "APPEAL PROCEEDINGS BEFORE THE COMMISSION"
part_number: "580"
part_name: "RULES OF GENERAL APPLICATION IN APPEAL PROCEEDINGS BEFORE THE COMMISSION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "25 U.S.C. 2706, 2713, 2715."
regulatory_source: "77 FR 58945, Sept. 25, 2012, unless otherwise noted."
cfr_part: "580"
---


# 580.6 How is time computed?

In computing any period of time prescribed for filing and serving a document, the first day of the period so computed shall not be included. The last day shall be included unless it falls on a Saturday, Sunday, or Federal legal holiday, in which case the period shall run until the end of the next business day. Except for appeals of temporary closure orders, when the period of time prescribed or allowed is less than 11 days, intermediate Saturdays, Sundays, and legal federal holidays shall be excluded from the computation.

[77 FR 58945, Sept. 25, 2012, as amended at 80 FR 31995, June 5, 2015]