39 CFR § 963.6 - Computation of time.
---
identifier: "/us/cfr/t39/s963.6"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "39 CFR § 963.6 - Computation of time."
title_number: 39
title_name: "Postal Service"
section_number: "963.6"
section_name: "Computation of time."
chapter_name: "UNITED STATES POSTAL SERVICE"
subchapter_number: "N"
subchapter_name: "PROCEDURES"
part_number: "963"
part_name: "PANDERING"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "39 U.S.C. 204, 401, 3008."
regulatory_source: "52 FR 18912, May 20, 1987, unless otherwise noted."
cfr_part: "963"
---
# 963.6 Computation of time.
A designated period of time under these rules means calendar days, excludes the day the period begins, and includes the last day of the period unless the last day is a Saturday, Sunday, or legal holiday, in which case the period runs until the close of business on the next business day.