Yes, you can.
Click on My Events in the top bar.
Find the event you wish to clone, using the event filters in the top right.
When you have found the event you are interested in duplicating and click on "Clone".
You will then be taken to a seperate page asking you if you wish to copy over any of the old settings from the original event
This includes: Booking Questions, Custom Email Text, Ticket Banners, Headliners, Event Capacity.
After this you will be taken to the 'Create/Edit Event' screen, however all of the information from your original event will be pre-populated in all of the information fields. Simply edit these details as required, paying particular attention to the event start/end dates, and the tickets start/end date under 'Advanced settings' and hit 'Publish'.