JES (Junulara E-Semajno) is a one week long meeting, organized by the Polish and German Esperanto Youth organizations, coorganized by the international groups of friends.
The 9th JES will take place from December 26, 2017 to January 2, 2018 in Szczecin, Poland.
Since 2009 JES occurs every year during the week of the New Year’s Eve, in countries of Central Europe.
Until now, the arrangement has just taken place in Zakopane, Burg (Spreewald), Naumburg (Saale), Szczawno-Zdrój, Weißwasser, Eger and Waldheim am Brahmsee.
Official website: http://jes.pej.pl/jes2017/