Calendar: CalendarWeekRule |
Inidicates how many days of the beginning of January must the first week contain in order to be counted as the first week.
Public Enum CalendarWeekRule
When a full week of 7 days from January is required, the week may not contain January 1st to 6th, since up to the first 6 days of January may exist in the same week and the week would not have 7 days from January in it as it may contain parts of the previous December. Those days would not count towards the number of weeks in the year.