Client Area

From the Client Area, access to the free and fee Web interfaces of the Culture Diff' softwares leading to solve various archaeoastronomical problems: the determination of the heliacal rise and set days of any star visible to the naked eye, of the days of solstices and equinoxes, of the astronomical source of orientation of any monument erected since the year 4712 BCE.

For the record, these softwares were developed for the needs of the doctoral thesis I prepared and defended at the Astrophysics Laboratory of Toulouse-Tarbes (now Research Institute in Astrophysics and Planetology), a Joint Research Unit of the CNRS and the University Paul Sabatier, Toulouse, France. They are exclusively available on the www.culturediff.org website.


point To access the full interface of the Culture Diff' softwares, please click here.

point To access the free testing interface of the Culture Diff' softwares, please click here.


These free tests of the Culture Diff' softwares will lead you to determine:
  • the dates of heliacal rising and setting of the star of Sirius in 2017 AD;
  • the days of solstices and equinoxes in 2017 AD;
  • the astronomical source of orientation of the pyramid of Cheops at Giza.


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Client Area