mattrbld/_includes/event.njk

<h3>{{ event.data.title }}</h3>
<p>
  <time datetime="{{ event.data.date | htmlDateString }}">{{ event.data.date | readableDateTime }}</time>
</p>
<p>{{ event.content | safe }}</p>
{% if event.data.ics %}
  <p><a href="{{ event.data.ics }}">Add {{ event.data.title }} to your calendar</a></p>
{% endif %}