The great thing about this tool is that not only can we see the opening hours & current sessions that are open, but it overlay's hourly volume on any selected pair. This is useful because we can learn and respond to activity within the session opened currently. For instance if you select EUR/CHF, you will notice the severe lack of activity during the Asian session, we have no business trading this cross at this point. AUD/JPY on the other hand can sometimes trade with more volume during the Asian session than EUR/CHF can during the European session. If you are going to trade the Asian session, Sydney is a fairly dead zone across all pairs. So await the Tokyo session open at Midnight GMT.