Organizations using a 445 calendar have four quarters of exactly 13 weeks, four weeks in the first period, four weeks in the second period, and five weeks in the third period. In version 1.18 of the DAX Date Table, week 13 should be the last week of Q1 and in period 3 but it is in period 4. Likewise, weeks 17, 21, 25, 26, 29, 30, 33, 34, 37 - 39, 41 - 43, 45 - 47, and 49 - 52 are all in the wrong period (shifted to one higher numbered period.
Organizations using a 445 calendar have four quarters of exactly 13 weeks, four weeks in the first period, four weeks in the second period, and five weeks in the third period. In version 1.18 of the DAX Date Table, week 13 should be the last week of Q1 and in period 3 but it is in period 4. Likewise, weeks 17, 21, 25, 26, 29, 30, 33, 34, 37 - 39, 41 - 43, 45 - 47, and 49 - 52 are all in the wrong period (shifted to one higher numbered period.