Night is the best time for trading for me. It seems to me that the market becomes more predictable exactly during this period because many stock exchanges are closed at night and many traders sleep, but those who don't sleep at night have a good chance to earn.
However, it's problematic to trade at night with floating spreads because they usually widen at night. Fixed spreads are a smart solution to this problem. That's why I chose this broker. With fixed spreads, I can conveniently trade without unexpected drawdowns typical to floating spreads.