The template allows you to do very primitive conditional processing, such as if-then-else. But no checking of variables except for booleans.

One thing you could do would be to create a one line function in Page.php that returns true or false depending on the page type, page title or whatever you think is safe to check. Call the function something mnemonic like DisplayCalendarOnThisPage.

Then you add something like

<% if DisplayCalendarOnThisPage %>
<div id="BlahBlahBlah">
display calendar stuff
</div>
<% end_if %>

to the template

If the template doesn't see your function, you might need to change it to
<% if top.DisplayCalendarOnThisPage %>

That's ONE way to do it, I'm sure there's a heap of others. :o)

OK, I figured out an organizational way to resolve it. I flip-flopped the calendar and the filter form which pushed the overlap lower than it was before. Then I changed all of my dates that aren't re-occuring to announcements so they don't have thier own page for the links. It's not a great fix, but it's good for now.