FS Timekeeper 1.8 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
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 default filename for the program's installer is FSTimekeeper.exe. The program lies within Home & Hobby Tools, more precisely General. The most popular versions of the program 1.8 and 1.2. The actual developer of the free software is Perfect Flight.
From the developer:
FS Timekeeper is an easy to use utility that provides a Flight Simulator independent time source from which it updates MSFS time since MSFS time will start to fall behind if you pause the simulation, access MSFS menus etc. FS Timekeeper also detects if you cross time zones during your flight and adjusts its internal time source, and subsequently MSFS Time, automatically.
You may want to check out more software, such as FS-FlightControl, Automatic Timekeeping or 12noon Timekeeper, which might be similar to FS Timekeeper.