L. L. Zamenhof his honour. In 1959, Unesco honoured Zamenhof in the occasion of his centenary. In 2015 Unesco decided to support the celebration of the 100th anniversary of the death of Ludwik Zamenhof. Zamenhof was 12 times nominated for the Nobel Peace Prize. His birthday, 15 December, is celebrated annually as Zamenhof Day by users of Esperanto. On 15 December 2009, Esperanto's green-starred flag flew on the Google search web page, in a commemorative Google Doodle to mark Zamenhof's 150th birthday. The house of the Zamenhof family, dedicated to Ludwik Zamenhof, and the Białystok Esperanto Centre, are sites of the Jewish Heritage
Mark Zamenhof of Zamenhof would be bound with the dismissal of many Polishes, that happened after 1863. Then Russian authorities sacked many Polish teachers. One reckons that in 1873 the Zamenhof family abandoned Bialystok. Even so unanswered is the question about the real cause of the transfer of Zamenhofs in Warsaw, where Mark surely advanced as a teacher of the German language in the Veterinary Institute and in the actual school, being that time only one from between three (!) Hebrews, that deserved to instruct in the Warsaw state schools . Because of what the local teacher received like this important position?