Mars24 Sunclock — Time on Mars

Download Mars24

Mars24 requires a computer with Java 11 (or later version) installed.

The current version of Mars24 is 8.3.1, released 2023-05-18.

Install and Run Mars24

After downloading the appropriate Mars24 archive linked above, uncompress the archive file on your desktop. Within is a README text file with an explanation of the contents of the download, instructions on how to launch the application, and some notes on possible launch bugs and/or performance tuning.

We would like to point out the following possible installation and launch issues:

If you find that after download and installation, Mars24 won't start, a possible reason might be that you don't have a Java Runtime Engine (JRE) installed on your computer, or that it is not a Java 11 (or later) JRE.

On macOS: Please download the Mars24 for "M1/M2 silicon" ARM64 Macs if you are using a Mac based on that architecture.

On Windows: You must extract Mars24 from the ZIP archive before you try to run it. If you simply open the ZIP file and then double-click on the Mars24 icon, you will get a class-loader error because it cannot locate code files.

Mars24 for Windows requires that certain keys/values regarding the Java installation be set in the Windows Registry. However, some alternative Java distributions may not set these keys or else may require that you explicitly set them during installation. See the JAVA_11 readme file.

On Linux etc: The TGZ archive of Mars24 "generic" was created using a BSD tar on macOS. Using GNU-tar to uncompress the package will probably print several "Ignoring unknown extended header keyword" warning messages. You should be able to ignore these messages.

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