Optional value that specifies the relative position of the day within month or year. If the frequency is monthly or if a MonthOfYearRecurrenceRule is present then the relative position indentifies the relative position within a month. If frequency is yearly then it identifies the relative position within the year. In case of monthly, valid values are -5 to -1 and 1 to 5. In case of yearly, valid values are -53 to -1 and 1 to 53.
Requirements
Target Platforms: Android 4.4+, iOS 8+
Development Environments: Visual Studio 2015+, Visual Studio for Mac Preview, Xamarin for Visual Studio 4.2+