Of course it's true that we all do. In North America we let a large rodent decide whether or not Spring is coming earlier or later. This, despite all of our weather scientists, meteorological models, and so on.
Here in Belgium however, I am learning a whole new set of bizarre rituals.
Tonight we ate potée aux choux. This, on this particular day, so there will be no infestations of flies in the coming summer.
Don't ask, I don't know.