Because 20: 00-24: 00 is the afternoon time in the European market and the morning time in the American market! This period is the time when the market fluctuates the most, and it is also the time when the amount of funds and the number of participants are the largest. From 24 o'clock to the early morning, it is the afternoon time in the United States. Generally, this time has already come out of the big market, and this time it is mostly a technical adjustment to the previous market.

Therefore, the evening is the most trading opportunity in a day. Sometimes it is necessary to watch the market at night, but it is not necessary to spend American time every day.