I'll tell you about it in today's episode, "On Tuesday the 13th, don't get married or embark on a voyage."
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Here is a summary of the Progrespagnol podcast episode:
On Tuesday the 13th, neither get married sms gateway switzerland nor embark
This day is considered the day of bad luck par excellence.

It is "of bad omen" (prophecy, omen) because there were 13 attendees at the Last Supper of Jesus Christ: twelve apostles and Jesus himself, considering Judas number 13 for being the one who betrayed him.
It was in chapter 13 of the Apocalypse that the antichrist arrived.
There were also 13 evil spirits according to the Jewish Kabbalah.
In Viking mythology, they explain how Loki, the spirit of evil, was the 13th guest at a dinner of the gods.
The number 13 in the Tarot means death and eternal misfortune.