Miami doesn't work with pool.ntp.org, either (at least, I could never get it to work).
Download the program
NTPSync from Aminet, stick it in C: and set like mine (obviously you'll need to adjust the number after the '-' (dash) for your correct GMT offset).
(screenshot attached)
*man, I am banging out answers to people's questions today. Too bad a.org doesn't reward points, lol* :lol: