This question is related to the previous one, inspired by thoughts of an online casino perhaps rigging games to pay out more or less at different times. Truth be told, there are no particular days on which you are more likely to win at online casinos. Nor is there a particular time of day (e.g., morning, evening, late night) when you’re more likely to win when playing online slots, video poker, or other casino games. You might find sites online claiming otherwise, but those sites are simply passing along urban myths.
It is true that online casinos pay out more when there is more traffic on the site, simply because the higher volume of play translates into more winnings. But the rate of success among the players doesn’t actually change.