About 5 hours but I'm not 100% sure.
Orlando is 5 hours ahead of Oahu.
London is 6 hours ahead of Texas.
London is 5 hours ahead of Orlando. In other words, when it is midnight here in Orlando, it is 5 in the morning in London! You can see the information yourself by clicking on the related link at the bottom, or you can copy and paste the link information yourself: http://www.timeanddate.com/worldclock/converted.html?month=8&day=14&year=2009&hour=0&min=0&sec=0&p1=867&p2=136
London is ahead.
London is GMT, New York is GMT -5 hours. New York is 5 hours behind London.
Mauritius is four hours ahead of London when London is on Winter Time (three hours ahead when London is on Summer Time).
Orlando, Florida is four hours ahead of California. Orlando is in the Eastern Time Zone. California is in the Pacific Time Zone.
London is 5 hours ahead of Ecuador.
5 hours. Example: 9 AM in Maryland, USA = 2 PM in England.
The time difference between London, United Kingdom (GMT) and Beijing, China (CST) is 8 hours. Beijing is 8 hours ahead of London.
Florida is is five hours behind London.
Hungary is always one hour ahead of London.