Need help to display month name in a collection loop

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hi! i want to display month name before a sequence of the posts in this month, but so far i only have achieved this.

anyone can help me?
thanks

      {% set events = page
      .collection({'items':{'@taxonomy.type':'course'}})
      .dateRange(datetools.startOfWeek, datetools.endOfYear)
      .order('date', 'asc') %}

 {% for event in events %}
        {% set day = event.date|date('d') %}
        {% set month = 'MONTHS_OF_THE_YEAR'|ta(event.date|date('n') - 1) %}
        {% set time = event.date|date('G:i') %}

        {% set dayEnd = event.header.end|date('d') %}
        {% set monthEnd = 'MONTHS_OF_THE_YEAR'|ta(event.header.end|date('n') - 1) %} 
        {% set timeEnd = event.header.end|date('G:i') %}
        
        <h3>{{ month }}</h3>

        <li>
          {{ day }} of {{ month }} - {{ time }} 

          {% if event.header.end %}
          until {{ dayEnd  }} of {{ monthEnd }} - {{ timeEnd }}
          {% endif %}
          <a href="{{ event.url }}">{{ event.title }}</a> 
        </li>
          {% endfor %}
        </ul>