The timesync.zip file you have requested: Modifications / Time Sync Tool - 268.64kb is not available. Perhaps try browsing all files for the game Grand Theft Auto: San Andreas and upload any files you want to share or are missing. This is the only information we could locate:
This tool keeps changing the clock in San Andreas in real time so that the time in game is exactly this same as the time on your system clock. This means its day when its day, night when its night, and adds a much better feel to the game when this is in effect IMHO.