The manufacturing calendar defines a 13-period year, made up of seven-day weeks. Manufacturing periods are divided into three quarters of three periods each and one quarter of four periods. All periods have four weeks, except for 53-week years, in which one period has five weeks.
When you define the 13 periods, you specify which quarter has the extra period. If the year has 53 weeks, you must specify which period will have the extra week. If you specify that the year starts on a specific date, you must indicate whether the year has 52 weeks or 53. If the year has 52 weeks, you may need to specify both 52-week and 53-week options, to pare the weeks first down to 53, then pare them down to 52. Available time depths are year, semester, quarter, period, week, and day.