Friday the 13th is considered an unlucky day in Western superstition and in addition to that, the unluckiest days of the year. It occurs when the 13th day of the month in the Gregorian calendar falls on a Friday, which can be the case at least once every year, and up to three times a year. In 2017, it occurs twice, on January 13 and October 13. There will be two Friday the 13ths per year until 2020, where 2021 and 2022 will have just one occurrence. Let’s check out some facts about why this date is tagged as the unluckiest of the year!