Frimaire was the third month in the French Republican calendar. The month was named after the French word frimas 'frost'.
Frimaire
Decimal time is the representation of the time of day using units which are decimally related. This term is often used specifically to refer to the French Republican calendar time system used from 179
French decimal clock from the time of the French Revolution. The large dial shows the ten hours of the decimal day in Arabic numerals, while the small dial shows the two 12-hour periods of the standard 24-hour day in Roman numerals.
Astronomical table from the Almanach national de France using decimal time
3 different representations of 3 hours 86 minutes decimal time by Delambre (9:15:50 a.m.)
Marriage certificate for Napoleon's sister, dated 12 floreal l'An V "à Sept heures Cinq Decimes" (May 1, 1797, at 6:00 pm).