There is also the slightly more modern International Fixed Calendar: http://en.wikipedia.org/wiki/International_Fixed_Calendar http://en.wikipedia.org/wiki/Int

There is also the slightly more modern International Fixed Calendar: http://en.wikipedia.org/wiki/International_Fixed_Calendar http://en.wikipedia.org/wiki/International_Fixed_Calendar It's essentially the same as the positivist calendar except: * gregorian names are kept * the extra month is inserted before july and is called Sol * the extra day on leap years is inserted before the 1st of Sol * was in actual use by Kodak until 1989 (amazing!)