Open editionFive-Squared Cinco de Mayo
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Open editionPythagorean Triple Day, 7/24/25
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Open editionEverywhere'squared Day, 9/27/2025 = 27/09/2025
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Open edition3,4,5 All-Squared Day, 9/16/25
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Open editionCatalan Number New Year's Day
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Open editionTribonacci New Year's Day
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