The rule of thumb is, if a news piece comes out on Tuesday or Wednesday, it might lead to a followup. Not that it would be true, but people will pretend it is, so you can at least keep up with the fashion. Mondays and Thursdays are iffy, and anything on Friday or the weekend is something you can sleep off without losing track of the narrative.

In short, check the news two days a week, and enjoy some more productive activity on the rest. You won't miss a thing.