The answer is: Thirteenth day of Adar

Esther 3:13

The decree for the extermination of the Jews was set for the thirteenth day of Adar, a day steeped in “pure” irony and suspense. It's wild to think how the Jews were facing certain doom, and yet, this event culminates in one of the most jubilant celebrations in Jewish tradition: Purim! It’s a bit like the story of Cinderella, where things look really bleak before taking a grand turn for the better.

Now, if you dive into the book of Esther, you'll also notice that while God is conspicuously absent in the text, the presence of divine providence is unmistakable. The way Esther, a Jewish orphan, rises to queen and uses her influence to thwart harm showcases a narrative brimming with resilience and courage. To add some trivia here: Did you know that the festival of Purim not only celebrates this miraculous turnaround, but it often involves reading the Megillah (the scroll of Esther) aloud and donning costumes? It turns the somber into the celebratory, embodying a lofty lesson that joy can spring from despair.

In a sense, this exhortation comes as a poetic reminder that even in the thick of daunting challenges and fears of genocide, unity and hope can arise to defeat oppression, transcending through culture, generations, and faith.