Nistime32bitexe ((better)) Free

nssm install MyService "C:\Path\To\MyService.exe"

For users needing higher precision (milliseconds instead of seconds), Meinberg provides a free, open-source port of the standard NTP daemon for Windows, including 32-bit versions. nistime32bitexe free

Understanding nistime-32bit.exe: Official NIST Time Synchronization nssm install MyService "C:\Path\To\MyService