And we think we got problems:

"Years appear in writing as Roman numerals (usually), with epoch 22 September 1792, the beginning of the 'Republican Era' (the day the French First Republic was proclaimed, one day after the Convention abolished the monarchy). As a result, Roman Numeral I indicates the first year of the republic, that is, the year before the calendar actually came into use. The first day of each year was that of the Southward equinox.
There were twelve months, each divided into three ten-day weeks called décades. The tenth day, décadi, replaced Sunday as the day of rest and festivity. The five or six extra days needed to approximate the solar or tropical year were placed after the months at the end of each year."

Right. Pass it over here, will ya? I'm on the case, and if I get it figured out I'll post back.