There was talk about changing the calendar on that date from the Julian to the newfangled Gregorian Calendar used in Catholic countries. If that had happened, today would be 14 September, not 3 September but it is deeper than that. Imagine living in a society where the government can simply tear 11 days out of a life. It does not bear thinking about.
We might as well live under the Khmer Rouge or Marat and his chums in revolutionary France. Of course, since then we have revised the Julian calendar but without this madness of moving us eleven days into the future.