Zamenhof Day Zamenhof Day Zamenhof Day (), also called Esperanto Book Day, is celebrated on 15 December, the birthday of Esperanto creator L. L. Zamenhof. It is the most widely celebrated day in Esperanto culture. On this day, Esperantists hold information sessions and cultural gatherings to promote literature in Esperanto. The history of celebrating Esperanto on Zamenhof's birthday can be traced back to 17 December 1878, when at a birthday party for his 19th birthday he presented to his friends his "Lingwe uniwersala", the first version of his international language. By 1887, this language had evolved into what is now recognized as
Ludwik Maciej Angeles, California. Ludwik Maciej had two sons, Sylwester and Luis, neither of whom were born in Poland. Ludwik Maciej died on March 12, 2007, in Los Angeles, California, and was buried on April 10, 2007, at the cemetery at Church of the Blessed Virgin Mary. With the help of Christians in Czechowice-Dziedzice, his ashes were brought from the USA by his son and buried in Ludwik Maciej's family grave at the cemetery. Ludwik Maciej Ludwik Maciej (May 16, 1915 – March 12, 2007) was a Polish military pilot, who participated in World War II. Son of Jan and Anna (née