Set hardware time on VMware esxi 6.x from console

If you need to change the system time for a VMware esxi 6.x server fron CLI you must use the following command:

esxcli system time set

Windows 2003 synchronize with a NTP Server

This info is based on  http://etherealmind.com/ios-configure-windows-2003-xp-use-ntp-server-sync-time-clock-router/

Stop the Windows Time Service using the CLI.
net stop w32time

You must configure your NTP Servers:
w32tm /config /manualpeerlist:"hora.rediris.es,europe.pool.ntp.org",0x8 /syncfromflags:MANUAL
The peer list must be enclosed
Use the 0×8 flag to force W32time to send normal client requests instead of symmetric active mode packets.

Restart the Windows Time Service and then force a sync.
net start w32time
w32tm /resync