Although the Forex Market is open 24 hours a day, most alerts are generated during the most liquid and active trading times; at the start of the European session through the opening of the USA markets. At times, you may expect signals outside of these hours.
Active Trading Times
From 4am – noon EST. (GMT-5)
During Daylight savings, this is between 4am and noon EST
For your reference, you can view which financial markets are open in real-time as reflected in chart below. When the markets are closed in Asia, Europe or the America’s, you can expect less volatility for the regions currency pairs, and when the markets are open you’ll see more market movement at those times.