Check on date - output a pretty date

_sub_prettydate.twig

{% if item is not defined %}
    {% set item = record %}
{% endif %}

{% if item.startdate|localdate("%G%b%e") == item.enddate|localdate("%G%b%e") %} {# one day event #}
    {% if item.startdate|localdate("%k%M") == item.enddate|localdate("%k%M") %}
        {# one day, same time #}
        {{ item.startdate|localdate("%e %b %G") }} 
    {% else %}
        {# one day, start and end time #}
        {{ item.startdate|localdate("%e %b %G %k:%M") }} - {{ item.enddate|localdate("%k:%M") }}
    {% endif %}
{% else %} 
    {# multiple day event, don't show time #}
    {{ item.startdate|localdate("%e %b %G") }} - {{ item.enddate|localdate("%e %b %G") }}
{% endif %}