April 11, 2022 - NATIONAL PET DAY – NATIONAL SUBMARINE DAY – NATIONAL CHEESE FONDUE DAY – NATIONAL BARBERSHOP QUARTET DAY – NATIONAL EIGHT TRACK TAPE DAY By Doug April 10, 2022
NATIONAL SUBMARINE DAY - April 11 National Submarine Day, on April 11th, honors the day the United States Navy acquired its first modern commissioned submarine. By National Day Calendar June 18, 2014
