National Submarine Day 2021

April 11, 2021 in the USA

April 11, 2021 is commemorated by the United States submarine community as Submarine Day, the anniversary of April 11, 1900 when the American Government purchased its first commissioned submarine, the USS Holland.

We have placed a detailed description of this event on this page: National Submarine Day 2022. For further information please stop by there!

Where is the event?
When is the event?
Sunday, the 11th of April 2021
Over since 6 days!

More dates:


National Submarine Day 2021 - Apr 11, 2021 – Copyright © 2021 Cute Calendar