Show modified date only if user has explicitly set it

templates/article.html

@@ -83,7 +83,7 @@
             {% set day = article.date.strftime('%d')|int %}
             <time pubdate="pubdate" datetime="{{ article.date.isoformat() }}">{{ article.date.strftime('%b') }} {{ day }} {{- article.date.strftime(', %Y') }}</time>
             {% endif %}
-            {% if article.modified %}
+            {% if article.modified and article.modified != article.date %}
             <h4>Last Updated</h4>
             {% set day = article.modified.strftime('%d')|int %}
             <time datetime="{{ article.modified.isoformat() }}">{{ article.modified.strftime('%b') }} {{ day }} {{- article.modified.strftime(', %Y') }}</time>

templates/page.html

@@ -46,7 +46,7 @@
             {% set day = page.date.strftime('%d')|int %}
             <time pubdate="pubdate" datetime="{{ page.date.isoformat() }}">{{ page.date.strftime('%b') }} {{ day }} {{- page.date.strftime(', %Y') }}</time>
             {% endif %}
-            {% if page.modified %}
+            {% if page.modified and page.modified != page.date %}
             <h4>Last Updated</h4>
             {% set day = page.modified.strftime('%d')|int %}
             <time datetime="{{ page.modified.isoformat() }}">{{ page.modified.strftime('%b') }} {{ day }} {{- page.modified.strftime(', %Y') }}</time>