From Magneto Software:
SNTP ActiveX Control is a lightweight and powerful Simple Network Time Protocol ActiveX control that can be used for very accurate local clock synchronization with a remote time server across the Internet. SNTP ActiveX control (sksntp.ocx) allows developers to integrate the SNTP (Simple Network Time Protocol) protocol message sending capability into their applications. SNTP ActiveX control can retrieve the exact time from any SNIP-compliant time server across the Internet, and synchronize your computer' local clock accurately to the order of milliseconds. The Control is fully compliant with RFC 2030. The control can be used from any Windows-based applications development environment, including Visual Studio. It comes with documentation, sample code, and working demo programs. SNTP ActiveX Control is available in both 32-bit and 64-bit versions. SNTP ActiveX Control requires Windows XP or higher. SkSntp ActiveX Control comes with complete documentation, sample code, and working demo programs.