Since Friday the 13th isn’t something to joke about, we decided to compile a list of interesting facts for your viewing enjoyment — courtesy of Jokes4us. Did you know that “quatrorzieme is a professional 14th guest hired by the French who had only 13 guests in attendance for dinner, who felt that was unlucky?” Continue reading for more — image above via.

1. Hotels

Hotels rarely have a room number 13. Usually it is called 12a or 14. Same with floors of buildings and the elevators without a #13 button. Highways sometimes will skip exit 13 altogether also.

2. Ships

Certain ocean liners will be held in dock until after midnight to appease passenger’s fears on Friday the 13th.

3. Accidents

British study concluded that even though there were less cars on the road on Friday the 13th (as compared with other Fridays) more accidents were reported.

4. Dollar Bill

On the USA Dollar Bill, there are 13 steps on the pyramid, 13 bars on the shield, and 13 leaves on the olive branch.

5. Apollo 13

Apollo 13, 1970, the 13th mission launched from pad #39 (13 x 3), mission was aborted, after an explosion occurred in the fuel cell of their service module. The rocket had left launcing pad at 13:13 CST and the date was April 13th.