StacksVerified U.S. regulatory reference

39 CFR §964.12

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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.