how do you set your system clock from a remote time server?

[Maury Merkin]

I saw, just a few days ago, a post with a command to get the current
time and reset the system clock.

I didn't pay much attention then 'cause I thought the script I used to
use with RH would work.  They don't.  (No 'rdate' and no 'clock').

Tia

Maury