Thank you for using Shadows

You are using the freeware version of Shadows and I thank you for that. This application is the result of thousands of hours of programming, documentation and efforts to make the science of sundials available and easy to use for all. You may want to go further by purchasing a Shadows Expert or Shadows Pro license in order to access to additional and advanced features such as astrolabes and ephemeris. By doing so, you will also express your support to the author and you will encourage future developments. You may also contribute to boost the reputation of Shadows and of this web site by spreading the word of mouth around you. Thanks. Fran├žois Blateyron.


Stay informed

Subscribe to the free information letter on Shadows and stay tuned on the latest developments on sundials and astrolabes.

Subscribe to the letter

Choose your level

Discover the list of advanced features that you could have access to by installing Shadows Expert or Shadows Pro.

Advanced features

Upgrade to Shadows Pro

Order your Shadows Pro license on-line with Paypal and start using all the advanced features a few moments later.

Order a license

Train yourself on Shadows

Learn how to use all the options and features of Shadows by reading the user manual on line or purchasing your own printed copy.

Read the user manual

Create a sundial

Build your own sundial as thousands of Shadows users already did and share photos of your realizations.

Sundials made by users

Enter the community

Share your experience with other users on the Facebook page dedicated to Shadows, sundials and astrolabes.

Facebook page

More on sundials

Discover additional resources on sundials and expand your knowledge.

Additional resources

Visit the photo galleries

Discover photo galleries of the sundials in Paris and around the world. And much more.

Photo galleries

Discover astrolabes

Shadows Pro makes it possible for you to discover and use these wonderful instruments.

Discover astrolabes