The month of nivôse is the fourth month of the republican Calendrier French.

It corresponded except for a few days (according to the year) at the period going of the December 21st to the January 19th of the Gregorian Calendrier.

In addition, it roughly recovers the period during which the Sun crosses the sign of the Capricorne of the Zodiaque tropic.

It drew its name “ from the snow which bleaches the ground of December in January ”, according to the terms of the report/ratio presented to the national Convention the 3 brumaire year II (October 24th 1793) by Fabre d' Églantine, in the name of the “charged commission of the clothes industry of the calendar”.

The decree of the 4 frimaire year II (November 24th 1793) “over the era, the beginning and the organization of the year, and on the names of the days and the months” spelled the name of the month nivose , without circumflex accent. The generalized addition of this accent settled gradually, at one unspecified later time. Besides one meets thousands of acts or official documents of the time not making yet use of this accent.

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