[Zope] Dynamic charts from Zope objects

This is a long shot... I want to use Zope (and some back end logic using python methods) to calculate and display a series of future events based upon some arbitrary start date. This is done for several disparate start dates for several different test cases (having different future events). I.e., for a given start date of the "parent" case, all of the event dates (and their dollar values) of the "child" events will be displayed on a timeline. Is there some product or method that I can use to generate timelines (i.e., money vs. time) dynamically based upon user-defined start dates? Thanks for your help. Ron ./.