flex/pelican/themes/Flex/templates/period_archives.html

{% extends "base.html" %}
{% block title %} – {{ _('Archives') }}{% endblock %}

{% block content %}
<article class="single">
  <header>
    <h1 id="archives">{{ _('Archives') }}</h1>
  </header>
  <div>
    <dl>
      {% set previous_date = False %}

      {% for article in dates %}
        {% if article.locale_date != previous_date %}
          {% set previous_date = article.locale_date %}
           <dt>{{ article.locale_date }}</dt>
        {% endif %}

        <dd><a href="{{ SITEURL }}/{{ article.url }}">{{ article.title }}</a></dd>
      {% endfor %}
    </dl>
  </div>
</article>
{% endblock %}