There was a download of Occult 4.1.2 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following versions: 4.1, 4.0 and 2.1 are the most frequently downloaded ones by the program users.
We recommend checking the downloaded files with any free antivirus. The actual developer of the free software is Herald. The default filenames for the program's installer are Occult.exe or vbPredict.exe etc. The software lies within Home & Hobby Tools, more precisely Religion-Esoterics.
From the developer:
Occult is a program for predicting astronomical occultation. It makes use of data that is freely available such as various star catalogues and the planetary ephemerides developed by government agencies. Occultation and graze observations have been contributed mainly by the efforts of amateur astronomers from around the world.
You may want to check out more software, such as Lunar Occultation Workbench, Darkness Within 1: In Pursuit of Loath Nolder or DM Secretary, which might be similar to Occult.