Sims 4 Countdown to Doomsday Challenge

I am a little confused about when you roll. Do you roll daily no matter what? Or only if that days rules require it?

In Day One you say you roll if one of 4 things happen. What are the four things? Or as I read through the days will it tell me when to roll? I am just confused LOL..sorry. Been one of those weeks where I seem to have left my brain around here somewhere.

Anyway, the minute I get one of the many challenges I am doing completed, I am going to do this. It sounds so fun. Can't wait to see the Colony Challenge too. I will be reading your attempt as well. :) Boomarked.