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Holidays for Sunday, April 11th, 2021

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Image for National Eight-Track Tape Day
Also known as National Eight Track Tape Day

Observed annually on April 11th
Image for Submarine Day
Also known as National Submarine Day

Observed annually on March 17th and annually on April 11th
Image for On This Day in History
Things that happened on this day in years past

Multi-day Events Starting on Sunday, April 11th, 2021

    Multi-day Events Continuing on Sunday, April 11th, 2021