On 16 Aug 2000, Chaim Frenkel wrote: > >>>>> "BB" == Buddha Buck <[EMAIL PROTECTED]> writes: > > BB> I am assuming that the system clocks are set accurately to UTC (or some > BB> derivative, like (US) Eastern Standard Time). UTC is what time-servers > BB> report. UTC has leap seconds, which are inserted (or, theoretically, > BB> deleted) at the end of December 31st and June 30th, as needed. > > Oh, I was under the impression that they only occur at Dec 31. Nope. > BB> This means that 86400 seconds (one day) after 2000 Dec 31, 12:00:00 UTC > BB> is not necessarily 2001 Jan 1, 12:00:00 -- it could be 11:59:59 or > BB> 12:00:01 as well. And there is no way to know that ahead of time. > > Hmm, there are negative leap seconds? I believe there haven't been any yet, and it is not likely that there will be any in the near future, but that there is provision for them. The IERS (International Earth Rotation Service) monitors things and sends out a bulletin twice a year, saying whether there will, or will not, be a leap second on 30 June or 31 December (and which sign it will have if there is one). Cheers, Philip -- Philip Newton <[EMAIL PROTECTED]>
- Re: RFC 99 (v2) Standardize ALL Perl platforms on UNIX... Buddha Buck
- Re: RFC 99 (v2) Standardize ALL Perl platforms on... Tim Jenness
- Re: RFC 99 (v2) Standardize ALL Perl platforms on... Russ Allbery
- Re: RFC 99 (v2) Standardize ALL Perl platform... Chaim Frenkel
- Re: RFC 99 (v2) Standardize ALL Perl platforms on... Chaim Frenkel
- Re: RFC 99 (v2) Standardize ALL Perl platform... Buddha Buck
- Re: RFC 99 (v2) Standardize ALL Perl plat... Chaim Frenkel
- Re: RFC 99 (v2) Standardize ALL Perl ... Buddha Buck
- Re: RFC 99 (v2) Standardize ALL ... Chaim Frenkel
- Re: RFC 99 (v2) Standardize ALL ... Nathan Wiger
- Re: RFC 99 (v2) Standardize ALL Perl ... Philip Newton
- Re: RFC 99 (v2) Standardize ALL Perl platforms on UNIX... Nathan Torkington
- Re: RFC 99 (v2) Standardize ALL Perl platforms on... Ted Ashton
- Re: RFC 99 (v2) Standardize ALL Perl platform... Jonathan Scott Duff
- Re: RFC 99 (v2) Standardize ALL Perl plat... Stephen P. Potter
- Re: RFC 99 (v2) Standardize ALL Perl ... Jarkko Hietaniemi
- Re: RFC 99 (v2) Standardize ALL Perl platform... Nathan Torkington
- Re: RFC 99 (v2) Standardize ALL Perl platforms on... Chaim Frenkel
- Re: RFC 99 (v2) Standardize ALL Perl platform... Jonathan Scott Duff
- Re: RFC 99 (v2) Standardize ALL Perl platform... Nathan Torkington