--- /dev/null
+//
+// SOSIntervalEvent.h
+// Security
+//
+// Created by murf on 9/12/19.
+//
+
+#ifndef SOSIntervalEvent_h
+#define SOSIntervalEvent_h
+
+@interface SOSIntervalEvent : NSObject
+
+@property (nonatomic, retain) NSUserDefaults *defaults;
+@property (nonatomic, retain) NSString *dateDescription;
+@property (nonatomic) NSTimeInterval earliestDate;
+@property (nonatomic) NSTimeInterval latestDate;
+
+- (id) initWithDefaults:(NSUserDefaults*) defaults dateDescription:(NSString *)dateDescription earliest:(NSTimeInterval) earliest latest: (NSTimeInterval) latest;
+- (void) schedule;
+- (bool) checkDate;
+- (NSDate *) getDate;
+- (void) followup;
+
+@end
+
+#endif /* SOSIntervalEvent_h */