The World Photography Day (WPD) is observed every year on August 19 to inspire photographers across the planet to share a single photo with a simple purpose: to share their world with the world. The date of August 19 was chosen to commemorate the invention of the Daguerreotype, a photographic process developed by Frenchmen Louis Daguerre and Joseph Nicephore Niepce in 1837. On January 9, 1839, the French Academy of Sciences announced the Daguerreotype process. On August 19 that same year, the French government purchased the patent and announced Daguerreotype free to the world as a gift. This event was an important step in the development of modern-day photography.