After USA changes the clocks, on November 5th trade server time will return to regular schedule.
For the residents of cities and countries that do not change the clocks, trading sessions will shift one hour forward in relation to the local time zone.
For detailed trading hours schedule check out Forex Specification and CFD Specification or trading platform.
Please note that the trading server time corresponds to Eastern European Time (EET, UTC+2). Please consider this information, when planning trading on financial markets.