The LustrumCie is a committee that organizes the anniversary of Di-Et-Tri. Last year they have organized the 8th lustrum of study association Di-Et-Tri in 2018 with seven girls. The lustrum consisted of a week and a half full of activities and festivities. This was from 22 May to 1 June 2018, week 2 and 3 of period 6. The theme was: ENERGY!