time synchronization on Suns

[Christopher JS Vance]

We have a number of different kinds of hardware running a variety of
Unices, and would like to synchronize time across this lot.

We are running ntp on one Pyramid and one Sun (Sparc).  We are running
timed on all Pyramids (including the one running ntp), on some
Apollos, and on our Convex.

What we don't have is something to keep our other Suns in synch.  What
software is recommended for keeping our Suns together with each other
and with the other hosts (we have Sun-3s and Sun-4s)?

Is it reasonable to run timed on our Suns?  Has someone got a version
of timed which will compile and run properly on Sun-3s and Sun-4s
running SunOS 4.1.1?

What caveats are there in running timed on Suns?  What caveats are there
in running ntp and timed on the same machine?

Should we be barking up a different tree?

Ta.

-- Christopher