Ah The ominous date-day combo when something unlucky has to happen. If the whole world is facing the day, the bad luck is uniformly and evenly distributed. Why should one worry then? If I am gonna have a great fall, isn't the person who is laughing at me, stepping on a banana peel simultaneously?
This way of looking at things is very interesting though. One can read his horoscope and live a day before even living it. Prejudice comes easy with superstitions. Thoughts, actions, all of them get affected by thinking in this direction- the grand scheme of things, God's plan, nature's course of action. I would call it micro-time-travel. You live the immediate next moment before even it touches you.
A car is coming to hit you, if you are told that in the grand scheme of things, you are supposed to die today... you won't resist it. If you are told the opposite, you will drag yourself out of the deepest mud to make it come true. Knowing what someone would think, say or how he or she would react to you, may determine your course of action. It's even worse than not resisting a car accident.
If you think you know someone, you tend to project him into a virtual existence and daydream about his actions and behaviour. It kind of takes away the spice...