@class ICSDate, NSArray; @interface ICSTimeZoneBlock : ICSComponent @property (retain, nonatomic) ICSDate *dtstart; @property (retain, nonatomic) NSArray *rdate; @property (retain, nonatomic) NSArray *rrule; @property (nonatomic) NSArray *tzname; @property (nonatomic) long long tzoffsetfrom; @property (nonatomic) long long tzoffsetto; - (long long)compare:(id)a0; - (BOOL)validate:(id *)a0; - (void)addRecurrenceDate:(id)a0; - (id)computeTimeZoneChangeListFromDate:(id)a0 toDate:(id)a1; @end