Friday the 13th
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Friday the 13th is considered an unlucky day in Western superstition. It occurs when the 13th day of the month in the Gregorian calendar falls on a Friday, which happens at least once every year but c
Friday the 13th marked on a calendar
The Last Supper by Leonardo da Vinci
Gioachino Rossini by Henri Grevedon
An Alitalia airplane without the row 17
Triskaidekaphobia
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Triskaidekaphobia is fear or avoidance of the number 13. It is also a reason for the fear of Friday the 13th, called paraskevidekatriaphobia or friggatriskaidekaphobia.
Friday the 13th
…St. Brice's Day massacre Triskaidekaphobia Tycho Brahe days…
Elevator panel in a building in the United States, where floors proceed from 12 to 14
The Death card, number 13, from an 18th-century Tarot deck
The exposed lift shaft of an apartment block under construction. The lift shaft has numbers marking the levels, but the 13th level is marked with a heart instead and the 14th level is marked with an upside down 4 to address tetraphobia.
Alternate mission patch of STS-41C, with a 13 and a black cat, as it landed on April 13th, which was a Friday the 13th and this was the mission originally scheduled as STS-13