The times are computed as Greenwich Mean Time which is over in England. It had been on Eastern time, but when I upgraded the board recently, it switched back to GMT. I have been trying to switch the default time back to Eastern, but without luck so far.
The best way to get the correct time for the posts is, when you are logged in, click on the control panel/ options link on the main page or in the upper right hand part of your screen. Then click on edit profile. One of the options is to choose which time zone you are in. Choose the appropriate time zone and then click on the edit profile button at the bottom. After that, whenever you are logged in, the board will automatically convert the post times and dates to your local time. If you are browsing without being logged in, you will get GMT. 

Seeing into the future would be nice. Now if only I could figure out how to apply GMT to the ads for Olivers in different publications.