Is Friday the 13th truly unlucky? Why so?

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Friday the 13th: Meaning and Why it is famous for Being Unlucky?

Unlucky? Friday the 13th is actually a better-than-average day for stocks - MarketWatch

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Learning English with Cambridge - It's Friday the 13th! Here in the UK it's considered an unlucky day by superstitious people. Some common superstitions are that it's bad luck to walk under

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