Crucial market moves usually happen during news time. The volume of trading goes up while the moves get more significant, this offers the best time to trade. This is the time when the biggest and very influential players make their moves and change their positions which results in change in currency flows. It is also important to keep in mind that trading during off peak hours is a big mistake. Professional forex traders, hedge funds, and options traders have a very big advantage over retail traders like you during the off peak hours. To avoid being run over by the big guns, conduct your trades during the peak hours.