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  • Holidays nobody asked forUntil's lists · Batman Day, Talk Like a Pirate Day, Ask a Stupid Question Day — official excuses to be weird.
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Awareness days

International Day for the Preservation of the Ozone Layer

Sep 16, 2026

Today

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  • Sep 16, 2027
  • Sep 16, 2028
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Culture

International Day of Peace

Sep 21, 2026

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  • Sep 21, 2027
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Awareness days

International Day for Interventional Cardiology

Sep 16, 2026

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Awareness days

World Patient Safety Day

Sep 17, 2026

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International Talk Like a Pirate Day

Sep 19, 2026

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Software Freedom Day

Sep 19, 2026

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  • Sep 18, 2027
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Awareness days

World Maths Day

Sep 18, 2026

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  • Sep 17, 2027
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Awareness days

International Equal Pay Day

Sep 18, 2026

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Awareness days

World Cleanup Day

Sep 20, 2026

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Awareness days

Car-Free Day

Sep 22, 2026

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  • Sep 22, 2027
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Awareness days

International University Sports Day

Sep 20, 2026

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Awareness days

World Alzheimer's Day

Sep 21, 2026

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