Does restoring a full backup bring it to the backup START time or the backup FINISH time?
Check out this link


  A full database backup provides a complete copy of the database and
  provides a single point-in-time to which the database can be restored.
  Even though it may take many hours for the backup process to run, you
  can still only restore the backup to a single point (effectively at
  the end of the backup, but I'll discuss exactly what that point is
  later in this article). A full backup does not allow recovery to any
  point in time while the backup was running.