Hi
to change the date format to 'dd/mm/yyyy' you have to edit the language files langs.js and general.php and change this values to:
- langs.js
'date format': 'd/m/Y',
'date format alternatives': 'd/m/y|j/n/Y|j/n/y|j/m/y|d/n/y|j/m/Y|d/n/Y',
- general.php
'date format' => 'd/m/Y',
'date format description' => '(dd/mm/yyyy)',
this also fixes the bug that puts the event in a wrong date when it is added after changing the format.