A period when a specific financial market is open and actively trading. The four major forex sessions are Sydney, Tokyo, London, and New York.
The forex market operates 24 hours through four overlapping sessions: Sydney (22:00-07:00 UTC), Tokyo (00:00-09:00 UTC), London (07:00-16:00 UTC), and New York (12:00-21:00 UTC). Highest volume and best trading conditions occur during the London-New York overlap (12:00-16:00 UTC). Spreads are tightest and fills fastest during active session hours. PropWise's Session Timer shows all sessions and kill zones in real time.