Daily changing probabilities

Hi there...
Strange question: Are the probabilities for certain things changed from day to day? I ask because several things seem to be prominent on one day but aren't the day after. Example: I run map after map with expedition scarabs one day and 2 in 3 tujen is there, so I have a "tujen day", next day it's almost always gwennen. Or I run heist after heist and one day i get countless reward chest with divination cards, next day There are next to no divccard chests...
Please don't answer "random is random", I know. Of course all this could happen without ggg changing probs, but it happens so constantly that I really wonder if they do... So, does anybody know?