There was a download of Perpetual Calendar 6.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Perpetual Calendar lies within Office Tools, more precisely Timekeeping.
Commonly, this program's installer has the following filenames: Calendar.exe and DTS.EXE etc. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The actual developer of the free software is JMBerthier. The most popular version among Perpetual Calendar users is 6.0.
From the developer:
Perpetual Calendar is a calendar program which works from year -3999 to year 3999 of our era. The main window of the programme is made of two panes. The main part is the monthly calendar, always visible and an expandable right pane shows several information: the corresponding date in the Julian or Republican calendars.
You may want to check out more software, such as WunderMoosen Calendar Xplorer, Export Live Mail Calendar to Outlook or Hebrew Calendar, which might be similar to Perpetual Calendar.
Timekeeping
Mind-mapping