Hello Paolo
1. If you look at our demo site
joomdonationdemo.com/eventbooking/
, you will see that you can filter events by date range (Today, Tomorrow, This Week, Next week, This Month, Next Month...)
2. If you want to be able to filter events between two dates, you can use our search module (it has option to search for events between date but not enabled on our demo site)
Tuan