Superfrenchie wants to celebrate that world language, Esperanto.
Felice Esperanto Tago! (Happy Zamenhof Day)
Here's a greeting card for Esperanto Day, aka Zamenhof Day, which is December 15th.
But it happens every year, so I'm actually just really early for the next one.
We are reminded of a French-speaking colleague who attended an Esperanto lesson and was not impressed. He thought making a language too easy to learn was just dirty pool.