19th of Kislev According to the Paritcher
ב''ה We were given three holidays in Exile: Chanukah, Purim and the 19th of Kislev. Chanukah is about Torah, since that is what the Greeks wanted to abolish. Purim is about Knesset Yisrael, since it was our people as a whole Haman wanted to destroy. The 19th of Kislev is the Kudshabrichu part... Reb Hillel Paritch (There is a statement in the Zohar: Yisrael, Oraita ve'kudshabrichu kola chad)