Systems and methods for selecting a time/date, or a range of times/dates are provided. In one aspect, systems and methods having non-linear timeline UI mechanism(s) for selecting a date, or selecting a date range, are provided. In recognition that user interaction with and recall of time varies depending upon how far away the time period of interest is from the present time, the non-linear timeline provides UI mechanism(s) for selecting a time having different granularities of time in different portions of the timeline. Additionally, in recognition that user interaction with dates and times is not always in terms of numbers, but rather in terms of events, etc., occurring at or around a particular time period of interest, systems and method having date relation UI techniques are provided.