CONVENTION NATIONALE. ~ Calendrier de la République française, précédé du décret sur l’ère, le commencement et l’organisation de l’année, et les noms des jours et des mois, avec une instruction qui en fiat connoître les principes et l’usage. Imprimé par ordre de la Convention nationale. Paris: Imprimèrie nationale, ‘l’an second de la République,’ [ 1793].
8vo (220 × 140 mm), pp. 28, , 2 folding diagrams, plus letterpress table and engraved diagram on 2 folding leaves at end. Uncut in original pale blue wrappers. Some soiling, margins occasionally fragile, one bifolium loose. An unsophisticated copy, as issued.
First edition. The first act of the National Convention after decreeing the abolition of the monarchy was the declaration of the Revolutionary Calendar, which began on 22nd September 1792. It was finally established in November 1793, and this is the publication explaining this decisive break with the absolutist past and the structure of the new calendar, in which the months were names after the prevailing weather or natural season (Vendémiaire, Brumaire, Frimaire etc) and a ten-day week was established. The Calendrier published on the instruction of the Convention is known with several different imprints, but all are rare.