Why do I feel one leg is longer than the other? The silly French did not really try to make a metric calendar, did they? Did they have 100 seconds in a minute and 10 hours in a day?
https://en.wikipedia.org/wiki/French_Republican_calendar
Decimal time
Main article: Decimal time § France
Each day in the Republican Calendar was divided into ten hours, each hour into 100 decimal minutes, and each decimal minute into 100 decimal seconds. Thus an hour was 144 conventional minutes (2.4 times as long as a conventional hour), a minute was 86.4 conventional seconds (44% longer than a conventional minute), and a second was 0.864 conventional seconds (13.6% shorter than a conventional second).
Clocks were manufactured to display this decimal time, but it did not catch on.
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 and called complementary days. This arrangement was an almost exact copy of the calendar used by the Ancient Egyptians, though in their case the beginning of the year was not marked by the autumnal equinox.