Is NASDAQ-Euronext the next big thing?

If you are in business or even a business enthusiast, you might be aware of the NASDAQ-Euronext merger. This means one single global trading floor, buy/sell stocks, futures, MF's etc from any part of the globe. But there is one thing i.e. bothering me is, what will be the standard opening and closing trading times. As its a different time zone on the other side of the globe. Will they try to put into action a new time-zone just for NASDAQ-Euronext trading? How are they going to do that?