оказывается корпорация Кодак до 1989 года жила по контианскому календарю (13 мес. по 28дн.)
International Fixed Calendar - Wikipedia, the free encyclopedia
History
The International Fixed Calendar League was founded in 1923 by Moses B. Cotsworth, with offices in London and later in Rochester, New York. It ceased activities in the 1930s.
George Eastman of the Eastman Kodak Company was a fervent supporter of the IFC, and instituted its use at Kodak in 1928, where it remained in use until 1989.
In recent years, there have been attempts to revive the plan.
The International Perpetual calendar is based on the Positivist Calendar published in 1849 by French philosopher Auguste Comte (1798-1857). Comte based his calendar on Polynesian calendars. The main difference between the International Perpetual calendar and the Positivist calendar is the names Comte gave to months and days. The months in the Positivist calendar were, in order: Moses, Homer, Aristotle, Archimedes, Caesar, St. Paul, Charlemagne, Dante, Gutenberg, Shakespeare, Descartes, Frederic and Bichat. Every day of the year was likewise named. Positivist weeks, and Positivist months, begin with Monday instead of Sunday. Whereas the Positivist and Sol calendars place the leap day at the end of the leap year, the International Fixed Calendar and the World Calendar both place it after June.
Disadvantages
For the superstitious, a disadvantage to this format is that every month includes a Friday the 13th, and this date occurs thirteen times every year.
Thirteen, being prime, is not evenly divisible, putting all activities currently done on a quarterly basis out of alignment with the months.
Several religious groups oppose any interruption of the seven-weekday sequence.
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