1. FIND:
  2.  
  3. return abs($diff_start_event) . ' ' . __('days left', 'cosmotheme');
  4.  
  5. and
  6.  
  7. return abs($diff_end_event) . ' ' . __('days left', 'cosmotheme');
  8.  
  9. CHANGE IN:
  10.  
  11. return 'Tra ' . abs($diff_start_event) . ' ' . __('giorni', 'cosmotheme');
  12.  
  13. and
  14.  
  15. return 'Tra ' . abs($diff_end_event) . ' ' . __('giorni', 'cosmotheme');