Currency market is primarily s 24 hour market that is open 5 days a week. On the weekend, this market is closed. The 24 hours of the currency market is divided into 3 primary sessions. These sessions are the Asian Session, London Session and the New York Session. London is still the currency market center with the biggest transactions taking place during the London Market Session. So trading the London Market Session on a daily basis can be highly profitable.
https://www.youtube.com/watch?v=p87skxV063A