taiclockd
taiclockd announces the local UNIX clock through the TAICLOCK protocol. It listens for TAICLOCK requests through UDP and responds with the sys- tem's current time. DO NOT RUN taiclockd IF YOUR SYSTEM IS TUNED BY xntpd. See http://pobox.com/~djb/proto/utctai.html for further discussion. taiclockd does not need to run as root.
taiclock(1) taiclockd(1)