| Class | Description | 
|---|---|
| DateUtil | A utility class with various methods for dealing with dates, calendars and time. | 
| Period | Type of time period, for instance SECOND, MINUTE, HOUR, DAY etc. | 
| RelativeDate | Representation of a relative date. | 
| RelativeDateRangePosition | The relative date range position, used to indicate the position of a  RelativeDateShortcut. | 
| RelativeDateShortcut | Shortcuts for relative dates. |