The term of confinement in a local or state correctional facility for the commission of a crime shall commence and be computed from the date of the final judgment, which, in case of an appeal, shall be that of the refusal of a writ of error or the affirmance of the judgment. When it is ordered that two or more terms of confinement run concurrently, then such terms of confinement shall commence and be computed from the time the first of such terms of confinement commenced.
For the purpose of determining allowances for good conduct, the term of confinement of a person convicted of a felony and sentenced to the Department whose sentence is partially suspended shall be that portion of the sentence which was not suspended.
Va. Code § 53.1-186