Define "should". I think that having the calendar appear, and lead to the reading page entries from the corresponding dates, would be the best thing for users. I recognize that it may be too expensive to actually do that. If it's too expensive and we can't have it, then I think having the calendar not appear on the Reading Page would be preferable to what we have now. I don't think there's any way that what we have now can be called correct or acceptable. I'm describing the relative priority between three options, not just suggesting one.