Which President was so superstitious, he would not travel on the 13th day of any month?

Franklin D. Roosevelt

Answer: Today we celebrate the unlucky day of Friday the 13th, a date synonymous with bad luck among the superstitious. The official scientific name of the phobia is known as friggatriskaidekaphobia.

That phobia is a cousin to triskaidekaphobia, the fear of the number 13. Our thirty-second president, Franklin D. Roosevelt, had a strong fear of the number thirteen. Franklin D. Roosevelt would not travel on the 13th day of any month and would never host 13 guests at a meal. Another notable presidential scaredy-cat? President Herbert Hoover.