dlevy pointed out to me that our local Chabad had sent out some important words in their latest newsletter:

By divine providence this year thanksgiving coincides with the 19th of Kislev Rosh Hashana Lachasidus. Which we celebrate on Thursday night. It is time to appreciate the contributions that Chassidic teaching and living has brought to this world. So tonight say L’chaim for the inner Dimension of Torah.

Of course! How had we not realised the divine providence of Thursday night?!
So, Thursday night, don’t forget to throw a Rosh Hashanah l’chasidus party. We believe it is celebrated by giving vodka to underage undergrads. L’chaim, indeed!