=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/period/WeeklyPeriodType.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/period/WeeklyPeriodType.java	2011-04-11 11:59:53 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/period/WeeklyPeriodType.java	2011-04-11 12:03:15 +0000
@@ -120,6 +120,8 @@
     public List<Period> generatePeriods( Period period )
     {
         Calendar cal = createCalendarInstance( period.getStartDate() );
+        cal.setMinimalDaysInFirstWeek(4);
+        cal.setFirstDayOfWeek(Calendar.MONDAY);
 
         // ---------------------------------------------------------------------
         // If the supplied period is the first week of a year where the start