Forex is 24 hour market – it's traded from Sunday 5pm EST through Friday 4pm EST. Rollover is at 5pm EST. Forex Major markets are: London, New York and Tokyo.
Forex Trading activity is heaviest when major markets overlap - between 2am and 4am EST (Asian/European) and between 8am to 12pm EST(European/N. American).Nearly two-thirds of New York activity occurs in the morning hours while European markets are open.