Forex is 24 hour market. It starts from Sunday 5PM EST to Friday 4pm EST. Characteristics of the Forex market.Forex is 24 hour market. It starts from Sunday 5PM EST to Friday 4pm EST.
Forex Trading begins in New Zealand, followed by Australia, Asia, Middle East, Europe and America. The United States and United Kingdom account for more than 50% of market transactions. During each day, the total volume of exchange is determined by the number of markets that are open and hours of each of these markets overlap one another.

Forex market volume of transactions remains high throughout the day, but peaks highest when the Asian market (including Australia and New Zealand), Europe and the U.S. market are open simultaneously. In particular, there are two times when two of the major markets overlap during trading hours - between 2 pm and 4 pm EST (Asia / Europe) and from 8am to 12pm EST (European / N. American).
If you want to find a large number of profitable trades, focusing on the hours when the markets tend to make their biggest moves, ie, during these big markets overlaps, which therefore, are generally the best times to trade.