And I think adding a second inside a minute is a mistake. Seconds 00-59, Minutes 00-59, Length of day dependends on the planet. An Earth Day is usually 24:00.00 but can vary to 23:59:59 or 24:00:01, used to be about 11 hours 4 Billion years ago. Earth days seem to be longer by 1/3 of a second after 50 years of precise measuring, so estimating a leap second every year after 150 years and 1 second every day in 54,000 years.
A Mars day is 24:37:00. People working with various Mars probes arrive 37 minutes later each day since their work arrives from Mars at that time. At least they don't get the jet lag when you have to change shifts by 8 hours over a weekend. On Tue, Nov 2, 2021 at 4:33 PM Alan Altmark <[email protected]> wrote: > > On Tue, 2 Nov 2021 07:51:00 -0500, Paul Gilmartin <[email protected]> > wrote: > > >On Tue, 2 Nov 2021 11:46:56 +0100, Stefan Skoglund wrote: > >> > >> ... UTC never changes, it increases monotonically ... > >> > >Those two statements contradict each other. And both are > >incorrect. UTC falls back at a leap second. > > Nope. There is no fall back for leap seconds. They are *inserted* into the > time stream (Temporal Mechanics 101). When that happens, UTC goes from > 11:59:59 to 11:59:60 to 00:00:00. It doesn't pause, repeat, or go backwards. > How an OS translates that concept into its local clock is left an exercise to > the vendor.bbbbbbbbbbbb > > Alan Altmark > IBM > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
