Using perch:if

I'm trying to compare the just "day" of date of an eventDate with the "day" of eventDate_End, and then only output a section of my template if that eventDate_End "day" is greater than the original eventDate.

Not sure best way or even if possible, is there a perch:if attribute that would work for this?

<perch:if id="eventDateTime_End" match="gt" value="{eventDateTime}" format="j">
                       <div class="eventDetail-group">
                           <div class="eventDetail-subtitle">Date(s):</div>
                           <perch:events id="eventDateTime" type="date" format="F j" />-<perch:events id="eventDateTime_End" type="date" format="jS, Y" />
                       </div>
                       <div class="eventDetail-group">
                           <div class="eventDetail-subtitle">Time:</div>
                           <perch:events id="eventDateTime" type="date" format="g:i a" /> - <perch:events id="eventDateTime_End" type="date" format="g:i a" />
                       </div>
                   <perch:else />
                      <div class="eventDetail-group">
                          <div class="eventDetail-subtitle">Date:</div>
                          <perch:events id="eventDateTime" type="date" format="F j, Y" />
                      </div>
                      <div class="eventDetail-group">
                          <div class="eventDetail-subtitle">Time:</div>
                          <perch:events id="eventDateTime" type="date" format="g:i a" />
                      </div>
                  </perch:if>
                      <div class="eventDetail-group">
                          <div class="eventDetail-subtitle">Categories:</div>
                          <perch:events id="category_names" encode="false" />
                      </div>