A term of probation commences on the day that the sentence of probation is imposed, unless otherwise ordered by the court.

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.