National Water Balloon Day 2024. Since edgar ellington invented the waterproof. The first friday in august brings a toast to ales, lagers, and pilsners that put the international in international beer day.

National water balloon day was an event launched by the town of newmarket, new hampshire, in 2019 as a way for residents to have fun while cooling. The first friday of august is the perfect day for a pool party because it is national water balloon day.