Codification. Amendment by section 3584(1) of Pub.L. 101-647 directed the substitution of "defendant" for "defendent" in subsec. (a)(3). Such substitution had already been editorially executed, therefore, no further change was required.
Effective Date of 1997 Amendment. Section 115(a)(8)(B) of Title I of Pub.L. 105-119 provided that the amendments to subsection (a) and the addition of subsection (e) "shall take effect 1 year after [November 26, 1997]."
Effective Date of 1996 Amendments. Amendment by Pub.L. 104-132 to be effective, to the extent constitutionally permissible, for sentencing proceedings in cases in which the defendant is convicted on or after Apr. 24, 1996, see section 211 of Pub.L. 104-132.
Section 308(g)(10)(E) of Pub.L. 104-208 provided that, to take effect with certain exceptions and subject to certain transitional rules, on the first day of the first month beginning more than 180 days after Sept. 30, 1996, subsection (b)(21) of this section is amended by striking "242A(d)(5)" and inserting "238(d)(5)".
Effective Date of 1988 Amendment. Section 7303(d) of Pub.L. 100-690 provided that: "The amendments made by this section [amending this section and sections 3565, 3583, 4209, and 4214 of this title] shall apply with respect to persons whose probation, supervised release, or parole begins after December 31, 1988."
Effective Date of 1987 Amendment. Amendment by Pub.L. 100-182 applicable with respect to offenses committed after enactment of Pub.L. 100-182, which was approved Dec. 7, 1987, see section 26 of Pub.L. 100-182.
Effective Date of 1986 Amendment. Section 11(b) of Pub.L. 99-646 provided that: "The amendment made by this section [amending subsec. (b)(11) of this section] shall take effect on the date of the taking effect of such section 3563(b)(11) [subsec. (b)(11) of this section]."
Section 12(c)(1) of Pub.L. 99-646 provided that: "The amendments made by subsection (a) [amending subsec. (c) of this section] shall take effect on the date of the taking effect of such section 3563(c) [subsec. (c) of this section]."
Effective Date. Section effective on the first day of first calendar month beginning thirty-six months after Oct. 12, 1984, applicable only to offenses committed after taking effect of sections 211 to 239 of Pub.L. 98-473, and except as otherwise provided for therein, see section 235 of Pub.L. 98-473, as amended, set out as a note under section 3551 of this title.
§ 3564. Running of a term of probation
(a) Commencement.A term of probation commences on the day that the sentence of probation is imposed, unless otherwise ordered by the court.
(b) Concurrence with other sentences.Multiple terms of probation, whether imposed at the same time or at different times, run concurrently with each other. A term of probation runs concurrently with any Federal, State, or local term of probation, supervised release, or parole for another offense to which the defendant is subject or becomes subject during the term of probation. A term of probation does not run while the defendant is imprisoned in connection with a conviction for a Federal, State, or local crime unless the imprisonment is for a period of less than thirty consecutive days.