[time-nuts] FreeBSD, NetBSD, or Minix-III?

[Attila Kinali]

On Sat, 16 May 2009 15:09:07 +0000
"Poul-Henning Kamp" <phk at phk.freebsd.dk> wrote:

> In message <4A0EBDEE.2020703 at erols.com>, Chuck Harris writes:
> 
> >A "watch" isn't exactly a challenge to an operating system.
> 
> Well, no.
> 
> But figuring out correct handling of time is a challenge for operating
> system programmers.

Out of pure interest: what makes handling of time difficult?