hexo-theme-icarus/layout/_partial/post/date.ejs

<% if (post.date && !post.hidedate){ %>
  <div class="<%= class_name %>">
    <i class="fa fa-calendar"></i>
    <a href="<%- url_for(post.path) %>">
      <time datetime="<%= date_xml(post.date) %>" itemprop="datePublished"><%= date(post.date, date_format) %></time>
    </a>
  </div>
<% } %>