World Pinhole Photography Day is celebrated on the last Sunday in April, with the next observance occurring on April 26. This day is dedicated to exploring the art of pinhole photography, encouraging individuals to engage in this unique and ancient photographic technique, whether as a hobby or profession. Experts share various techniques to help beginners learn more about pinhole photography. The day aims to promote the essence of this artistic form and inspire people to take captivating photographs using pinhole methods. While the specific origins of the day are unclear, it has been recognized since at least 2001.