au jour d'aujourd'hui?

I've been wondering about the french word "aujourd'hui", which means "today". It seems like a word made up of several other words, and I wondered why. Well apparently in old french "hui" was the word for today. You might notice that it's very similar to the spanish word for today, "hoy". They both come from the common latin root of "hodie", as does "oggi" in italian. Apparently "hui" wasn't clear enough for the french, so they added "aujourd'" to it, which means literally "on this day of [today]". And that my friends is why aujour'hui is such as strange word.