Event-single data format

Hello.
How to change the data format view on a single event?
In Catalan, the month starting with a vocal need to have a “d'” before the month, for example “24 th of august” is “24 d’agost”. Any way to include this rule?
If not, any way to change the view of the data to be dd/mm/yyyy?

	<div class="ai1ec-time ai1ec-row">
		<div class="ai1ec-field-label {{ col1 }}">{{ 'Data:' }}</div>
		<div class="ai1ec-field-value {{ col2 }} dt-duration">
			{{ event | timespan | raw }} hs.
			{% if timezone_info.show_timezone %}
				{% if timezone_info.using_calendar_tz %}
					<span>{{ timezone_info.calendar_timezone }}</span>
				{% else %}
					<span>{{ timezone_info.event_timezone }}</span>
				{% endif %}
			{% endif %}
			{% include 'recurrence.twig' %}
		</div>
		<div class="ai1ec-hidden dt-start">{{ start }}</div>
		<div class="ai1ec-hidden dt-end">{{ end }}</div>
	</div>