A Friday occurring on the 13th day of any month is considered to be a day of bad luck in English, German, Polish and Portuguese-speaking cultures around the globe. Similar superstitions exist in some other traditions. In Greece or Spain, for example, Tuesday the 13th takes the same role. In Russia, the unlucky day is Monday[citation needed]. The fear of Friday the 13th is called paraskavedekatriaphobia (a word that is derived from the concatenation of the Greek words Παρασκευή, δεκατρείς, and φοβία, meaning Friday, thirteen, and phobia respectively; alternate spellings include paraskevodekatriaphobia or paraskevidekatriaphobia) or friggatriskaidekaphobia, and is a specialized form of triskaidekaphobia, a phobia (fear) of the number thirteen.