Balanced French Calendar
The Balanced French Calendar takes the complementary days of the French Republican Calendar and distributes them among the quarters in the following sequence (thus "balancing" each quarter nearly equally) :
Day of Virtue - 1 day
Vendemiaire - 30 days
Brumaire - 30 days
Frimaire - 30 days
Day of Talent - 1 day
Nivose - 30 days
Pluviose - 30 days
Ventose - 30 days
Day of Labour - 1 day
Germinal - 30 days
Floral - 30 days
Prairial - 30 days
Day of Convictions - 1 day
Messidor - 30 days
Thermidor - 30 days
Fructidor - 30 days
Day of Honors - 1 days
Day of Revolution - 1 day (leap day)
Traditionally, the French Republican Calendar used 10 day weeks. In this form either 10 day weeks or 7 day weeks can be used. Although this is not a leap week calendar, this arrangement forms quarters of whole 7-day weeks, whether considered from the preceding or following complementary days.
There have been several leap year rules proposed for the French Republican Calendar, because the original decree for the calendar was unclear, If it is desired to link this calendar to the current Gregorian Calendar, I recommend having the leap day occur whenever necessary to have January 1 and Nivose 11 fall on the same day. If this rule is followed then the first day of Vendemiaire would always fall on September 22.
-Walter Ziobro