Definition: "ES_4.1_64," in English, means "Eighteenth of June Fourth." In Judaism, it signifies the observance of Hanukkah on the 25th day of the month. The name "ES_4.1_64" is a reference to Jewish tradition that mentions this holiday being held on the eleventh day of Sukkot (the harvest festival), and as such, it's also referred to by Jews as "Sukkot Hanukkah."