Born on December 15
Zamenhof Day
A birthday for the language of hope.
Next: December 15, 2026
Where it comes from
Zamenhof Day falls on 15 December, the birthday of Ludwik Lejzer Zamenhof, born in Białystok, then in the Russian Empire, in 1859. Growing up among several languages and frequent conflict, he came to believe that a shared language could help people understand one another.
How it's celebrated
Esperanto clubs around the world meet on or near the day for talks about Zamenhof, poetry readings and book reviews, and often exchange gifts, preferably books written in Esperanto.
Did you know
At about the age of ten, Zamenhof wrote a play about the Tower of Babel, already convinced that language barriers lay behind conflict between peoples.
Read the full story of Zamenhof Day
Also on this day
- World Turkic Language Family Day · Words carved in stone, still spoken.
Star sign
Sagittarius · November 22 – December 21 · Fire sign
Restless and optimistic, always planning the next adventure.