In this episode we cover:

A bit on the Chabad celebration of 5 Teves, "Yom Didan Natzach"
Background on Megillas Taanis - both the Tannaitic and Geonic versions
Attitudes toward the translation of the Torah into Greek - in Chazal and among other groups
The Chasam Sofer's fascination with the 8th of Teves as the day commemorating the translation

Links to articles mentioned:

The 8th of Teves and Chasam Sofer's Fascination with it