Actually depends on situation Since mostly on my experience I am seeing that the altcoins price are pretty much more alive in the night since people who works on day time can attend their trading platforms since it is the time of the day that they are not busy on their daily works. Just try to compare men so you could see for yourself on what am i talking about here but if you cannot trade on night well much better that you maintain your habit and don't rush yourself since you might stress out on some certain results. And it will be trully good if we monitor each price movement since we can still earn on tradings wheter its day or night but we should need to be cautious to spot those high flactuating coin.