April 11 - Social Media Events https://socialmedia.events A place to find all the fun and quirky world holidays and observances including those unique awareness days that are perfect for social media promotion. Thu, 04 Mar 2021 18:36:11 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://socialmedia.events/wp-content/uploads/2020/07/cropped-logo-32x32.png April 11 - Social Media Events https://socialmedia.events 32 32 180701282 National Submarine Day https://socialmedia.events/event/national-submarine-day/ https://socialmedia.events/event/national-submarine-day/#respond Sat, 11 Apr 2020 08:05:13 +0000 https://socialmedia.events/?p=1424 National Submarine Day National Submarine Day, on April 11th, honors the day the United States Navy acquired its first modern commissioned submarine. On April 11, 1900, the Holland VI became the Navy’s first modern submarine. Designed by Irish-American inventor John Phillip Holland in 1896, he launched the Holland VI on May 17, 1897, at Navy […]

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