Forex is 24/7 market i.e it remains open 24 hours a day. Holidays in the Forex market are at best partially observed. When one country is celebrating a holiday, generally other countries may not be, as is often the case with national or religious holidays. FX market has the four important time session. These time sessions are US Session, Singapore session, London session and Tokyo session. Forex Trading opens in New Zealand, followed by Australia, Asia (and particularly Japan), the Middle East, Europe (with London being the main financial center) and then America. It means when the traders in London have stopped trading for the day, the traders in New York continue. When the traders in New York stop trading for the day, then the traders in Sydney begin.
Regional Forex Market Hours:
New York opens at 8:00 am to 5:00 pm EST
Tokyo opens at 7:00 pm to 4:00 am EST
Sydney opens at 5:00 pm to 2:00 am EST
London opens at 3:00 am to 12:00 noon EST
Hours when two sessions overlap:
New York and London: between 8:00 am — 12:00 noon EST (EDT)
Sydney and Tokyo: between 7:00 pm — 2:00 am EST (EDT)
London and Tokyo: between 3:00 am — 4:00am EST (EDT)
Note:At those overlapping trading hours you'll find the highest volume of trades and therefore more chances to win in the foreign currency exchange market.