How to show hide element in page

I have been through the tutorials, but none match my needs.
Part of my page is this:

                <img src="graphics/btn_locatie.png">
                {{locatie}} - {{plaats}}<br><img src="graphics/btn-datum.png">{{datumaanvang.formatDate("d MMM yyyy")}}-{{tijdaanvang.formatDate("H:mm")}} / {{datumeind.formatDate("d MMM yyyy")}}-{{tijdeind.formatDate("H:mm")}}
              </small>

Now I need to show {{datumeind.formatDate("d MMM yyyy")}} only if it is bigger than 0000-00-00 or later than {{datumaanvang.formatDate("d MMM yyyy")}}