12–13 Tammuz
12–13 Tammuz or Yud beis v' yud gimel Tammuz (Hebrew: י"ב וי"ג תמוז /jud bˈeɪz vi jud ˈɡɪmɛl ˈtɑ muːz/ lit. 'The twelfth and thirteenth of Tammuz') is a holiday on the Chabad-Lubavitch calendar that commemorates the liberation of Rabbi Yosef Yitzchak Schneerson, the sixth Rebbe of the Chabad-Lubavitch dynasty, from Soviet imprisonment. The holiday also marks his birthday. It is one of the three holidays named "day of liberation" by Chabad-Lubavitch