First of all, what are rolling time zones?
When you have a rolling time zones feature on your event, your sessions start at the same time across different time zones. This means that if a session begins at 10 AM in New York, it will start at 10 AM in Dubai as well. Everywhere across the world, it will begin at 10 AM in each person’s time zone.
Is this something that’s important?
To answer this question, there are two others you should ask yourself: 
- Are your attendees international/across several time zones?
- Do you have enough attendees in several time zones that would be at awkward times?
If you have a lot of attendees in the US, you can pretty safely just run your event at a time that’s fairly courteous for all US time zones. For example, starting at 8 AM in PST and 12 PM in EST. Most people can attend during these times, so you don’t have to worry about having the event roll through time zones.
However, if you have about half of your attendees in the US, a quarter in the UK/Western Europe, and the final quarter in Asia, you might want to seriously consider rolling time zones. The Eastern countries often wind up having to attend events that begin at 9 PM, 10 PM, or even into the wee hours of the morning. While those times are plenty courteous for the US and some UK attendees, you might want to consider that last quarter of your audience who doesn’t appreciate that oversight.
Don’t want to do rolling time zones, but still want the whole world to be able to see your sessions at their convenience? You can host your sessions at scheduled times, then offer them On Demand after they broadcast. You can also run your event similar to a class, and make the whole thing On Demand.
Have a scenario not covered here? Send me a message, and I can help you brainstorm: kat@vconferenceonline.com
Good luck!