Does being born on Friday the 13th make you a werewolf?
Although not common, if you dig, you can find obscure references to superstitions that indicate that if you are born on Friday the 13th you will become a werewolf.
These superstitions appear to have originated with the belief that Friday the 13th is an unlucky day, and that those born on this day would be equally unlucky. Combine that with the fact that many humans are fearful of werewolves, and would consider being a werewolf to be very unfortunate (and very unlucky), and you have the origins of the superstition! It is therefore entirely unclear as to whether or not this superstition holds any merit, as it may just be due to humans considering being a werewolf unlucky.
As for the unluckiness of Friday the 13th… The history of Friday the 13th as being unlucky is due to the equally unlucky “Friday” and number “thirteen” being combined on a single day. In fact, just on its own, Friday itself was considered extremely unlucky – a quote from 1846 indicates that a “child born on a Friday is doomed to misfortune”. Combine that with the number 13 (often considered unlucky due everything from a mathematical ‘imperfection’ to Norse legends) and the unluckiness of the day multiplies!!
Perhaps however the most significant notion behind the unluckiness of Friday the 13th is the great religious significance which both Friday and the number 13 have in past and modern culture. In particular, the Bible plays a significant role in making Friday the 13th unlucky due to: 1.) Judas, the famous betrayer of Jesus, being Guest #13 at the last supper and 2.) many horrible events in the Bible occurring on Fridays including the death of Jesus Christ, Noah’s great flood, and the temptation of Adam with the apple.