We are entering the Month August tomorrow (which here in Finland is just about an hour away). I've previously written about the history and etymology of the month. But besides those interesting tibits it also has some curious numerical properties.
The first day of August is never the same weekday as any other month's first day, except during a leap year when it falls into same day as February.
It is also the only month thatst has the same amount of days as the month before it within the same year. According to some sources this might be because, as the month is bearing the name of the emperor Augustus it couldn't have had fewer days than the month bearing another emperors name (July / Julius Caesar). It is indeed fact that August had originally only 29 days and those two days were added when the Julian calendar was adopted substracting the extra day from February.