On what date are the celebrations of the commemoration which is organized by the Compagnie de 1602 usually held?
Compagnie de 1602: The Compagnie de 1602 is an historic and patriotic association in Geneva who organize the official commemoration of the Escalade. L'Escalade:  The celebrations and other commemorative activities are usually held on 12 December or the closest weekend.
12 December