Article 12 1.

For the purposes of the five-day catch and effort reporting system, each calendar month shall be divided into six reporting periods, designated by the letters A, B, C, D, E and F and running from day one to day five, day six to day 10, day 11 to day 15, day 16 to day 20, day 21 to day 25 and day 26 to the last day of the month.