You may or may not be superstitious but when it comes to Friday the 13th, but people tend to be a little more cautious. Whether or not you believe in the unlucky powers of the day, these five facts are sure to catch your attention in 2017.

1. It’s all Sunday’s fault. While the unlucky day may fall on a Friday, it all begins on a Sunday. If the beginning of a month starts on a Sunday, you can expect to have a Friday the 13th. If you don’t believe it, check out these calendars.

2. An asteroid will pass by Earth on Friday the 13th … April 13, 2029. If you think losing your keys or losing a couple dollars is unlucky, consider what’s going to happen on April 13, 2029. According to NASA, asteroid 2004 MN4 will fly very close to Earth, but it won’t hit, even though at one point they thought it would.

“A collision with Earth was theoretically possible. ‘We weren’t too worried,” said Paul Chodas of NASA’s Near Earth Object Program, “but the odds were disturbing.”

3. The fear is real. While some people may be a bit superstitious when it comes to Friday the 13th, others can be genuinely afraid. Paraskevidekatriaphobia is the official name of people who have a phobia of the day, while triskaidekaphobia is the fear of the number 13.

4. There have been a number of unlucky events. Friday the 13th dates have seen a number of unfortunate events throughout time including the death of Tupac Shakur (Sept. 13, 1996), the capsizing of the Costa Concordia (Jan. 13, 2012), the bombing of Buckingham Palace (Sept. 13, 1940) and Hurricane Charley (Aug. 13, 2003).

5. No one knows how the idea of Friday the 13th started. Donald Dossey of the Stress Management Center and Phobia Institute believes the fear can be traced back to a Norse myth about 12 gods who had a dinner that was interrupted by a 13th guest, Loki. As for the day, some believe that the standard day for crucifixions in Rome were on Fridays. And in the late-19th century, executions were held on Fridays.

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