The conference organizers are mostly based in Vancouver (we were originally planning to host the conference at Whistler BC, as seen in the 2010 Olympics...), so the default timezone for the conference is Pacific Daylight Time. If you would prefer to see the time in your own timezone (and who wouldn't?) Indico lets you switch the timezone to anything you choose.
Go to the top right of the screen:
Where it says "America/Vancouver" in this example, select your favourite timezone from the drop-down menu:
You can check "Remember these settings" if you do not want to do this every time.