In message <[EMAIL PROTECTED]>, Rob Seaman writes: >> 2. Julian Date (JD) >> >> [...] For that >> purpose it is recommended that JD be specified as SI seconds in >> Terrestrial Time (TT) where the length of day is 86,400 SI seconds.
Let me see if understood that right: In order to avoid computing problems and to get precise time, astronomers rely on a timescale without leapseconds, because the Earths rotation is too unstable a clock for their purposes. And in N years, for some value of N, JD's will start at midnight instead of noon in Greenwich. "Don't do like we do, do as we say..." Yes, the irony is rather notable. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.