[Zope] Calendar application

I suspect there must be a Zope product which will do something like this... I would like to be able to display a calendar which highlights dates on which there are specific events, and if the dates of those events are within the following month of the current date, I would like the individual events to be shown on a 'forthcoming events' page automatically without having to update the page manually. How would I go about doing something like this? -- John