Lobster thermidor does not take its name from the hotness of the sauce, but from a month of the French revolutionary calendar.

Soviet calendar (Soviet revolutionary calendar)

The revolutionary leadership also devised a revolutionary calendar to displace the Christian months and the seven-day week with its sabbath.

The fall of Robespierre on July 27, 1794, known as 9 Thermidor by the short-lived revolutionary calendar, marked the beginning of the counterrevolution.

In 1803, the Franc germinal (named after the month Germinal in the revolutionary calendar) was established, creating a gold franc containing 290.32 mg of fine gold.

He died in Ancône in October 1798 (and not in 1799, as mentioned in some sources; there was a discrepancy due to the French revolutionary calendar).

In a movement that relied on symbols, from the red hats of the revolutionaries to the renamed days and months of the revolutionary calendar, "the spectacle of death" was its major sign.

He cursed the revolutionary calendar but worked out that it meant in five days' time.

In February came the news from France of a coup on November 9-18 Brumaire, by the French revolutionary calendar.

Dates in official records at this time use the revolutionary calendar and need "translating" into the Gregorian calendar for calculating ages etc.