Program SONNE, vers. 8.8 (Okt. 2025)

The program runs on all Windows systems (64-bit-versions too) and calculates about 20 (!) different types of sundials. You can draw the dials on screen, have them printed with all printers installed or saved as file with format *.dxf (AutoCad,...) or *.plt (HPGL). SONNE and its (chm)help files are offered in English and German.

Improved Sun Path Diagrams show the times of sunshine on any selected plane sundial too. Additionally the local skyline (horizon profiles without buildings and trees) can be calculated and displayed.  ( ... more)  Since  display of rectangular horizon profiles is improved for negative latitudes

 New in version 8.8:
  1.  Calculation of Michnik's bifilar sundial
  2.  Impeoved rectangular horizon profiles for negativ latitudes
  3.  Additional information for orientation of biazimutal sundials

Unpack downloaded zip-file to your subdirectory or USB-stick and start Sonne_88.exe. If the chm-help is displayed only partially, see the enclosed README.

Download SONNE, vers.88  (packed as SONNE_vers88.zip, ca. 12 MB)