WYGIWYH/app/templates/admin/base_site.html

{% extends "admin/base_site.html" %}

{% block extrahead %}
{{ block.super }}
  
{% include 'includes/head/favicons.html' %}
  
<script>
  let tz = Intl.DateTimeFormat().resolvedOptions().timeZone;
  if (!tz) {
      tz = "UTC"
  }
  document.cookie = "mytz=" + tz + ";path=/";
</script>
{% endblock %}