Thirteen-month Calendar
A Frenchman, Auguste Comte, proposed this perpetual calendar in the mid-1880s. It had thirteen months of twenty-eight days each, resulting in 364 days of exactly fifty-two weeks. In common years, Year Day, the intercalary day, was added and dedicated to the memory of the dead. In leap years, two intercalary days were added. The days, weeks, and months were named after the world's great men and women.
