I have a chart with an X axis configured with the NRangeTimelineScaleConfigurator so that the X axis displays dates. The X axis has weekend rules applied, such that the dates on the X axis are non-consecutive, since Saturday and Sunday dates do not appear. All of this works well.

Can I, using this configuration, and given a date ... 

1. Determine whether or not the given date is actually displayed on the X axis? If so, how?
2. Determine the next date after the given date actually displayed on the X axis? If so, how?
2. Determine the previous date after the given date actually displayed on the X axis? If so, how?