ensl.org/app/views/widgets/_calendar.html.erb

<div class="widget calendar">
  <h4><%= t('widget.schedule') %></h4>

  <div class="widget-content-wrapper">
    <% upcoming_matches.group_by{ |e| e.start.month }.each do |month, events| %>
      <% events.group_by { |e| e.start.day }.each do |day, day_events| %>
        <div class="separator"><%= day_events.first.start.strftime("%A, %e %B") %></div>
          <% day_events.each do |event| %>
            <div class="entry">
              <p><%= event.formatted_summary %></p>
              <p><%= event.start.strftime("%H:%M %Z") %></p>
            </div>
          <% end %>
      <% end %>
    <% end %>
  </div>
</div>