I would think a 24hour event in this sense would make super sense. For example, today I was not able to get on time. Tomorrow I will give it a good go.
Suggestion for @roelandp, I understand that not all presentations would be heard in a 24 hour event, but then if making like a 2 round inverting 12hours in timezones, making every presenter present the same thing on the second day at a different slot on the timezone would give a huge opportunity for everyone to have more reasons to attend any time..
Yes, it would be nice if the event is open longer than two days. See you tonight in front of the stage. 😎