At least once a year, the calendar dates align to give us a Friday the 13th. Airline ticket prices tend to dip, your superstitious boss avoids important meetings and the whole day, there's a small part of you that's just waiting for something weird to happen.
원문출처 : https://www.cnn.com/2019/12/13/us/friday-the-13th-history-why-trnd/index.html
원문출처 : https://www.cnn.com/2019/12/13/us/friday-the-13th-history-why-trnd/index.html