


As the rapporteur of the commission, Charles-Gilbert Romme presented the new calendar to the Jacobin-controlled National Convention on 23 September 1793, which adopted it on 24 October 1793 and also extended it proleptically to its epoch of 22 September 1792. They associated with their work the chemist Louis-Bernard Guyton de Morveau, the mathematician and astronomer Joseph-Louis Lagrange, the astronomer Joseph Jérôme Lefrançois de Lalande, the mathematician Gaspard Monge, the astronomer and naval geographer Alexandre Guy Pingré, and the poet, actor and playwright Fabre d'Églantine, who invented the names of the months, with the help of André Thouin, gardener at the Jardin des Plantes of the Muséum National d'Histoire Naturelle in Paris. The new calendar was created by a commission under the direction of the politician Charles Gilbert Romme seconded by Claude Joseph Ferry and Charles-François Dupuis. Natural constants, multiples of ten, and Latin derivations formed the fundamental blocks from which the new systems were built. Amid nostalgia for the ancient Roman Republic, the theories of the Enlightenment were at their peak, and the devisors of the new systems looked to nature for their inspiration. The new Republican government sought to institute, among other reforms, a new social and legal system, a new system of weights and measures (which became the metric system), and a new calendar. The days of the French Revolution and Republic saw many efforts to sweep away various trappings of the ancien régime some of these were more successful than others. 9 Famous dates in the Republican Calendar and other cultural references.7 Converting from the Gregorian Calendar.
