mån 2021-11-01 klockan 15:09 -0500 skrev Paul Gilmartin: > On Mon, 1 Nov 2021 12:19:31 -0700, Retired Mainframer wrote: > > > I think the answer is both. AT 0700 UTC it will be 0200 CDT. > > After an > > infinitely small interval, it will still be 0700 UTC but will be > > 0100 CST. At > > the time of transition, either CST is correct (or maybe neither > > are). > > > I'm more comfortable with the opposite convention: > 06:59:59.999... UTC is 01:59:59.999... CDT > 07:00:00.000... UTC is 01:00:00.000... CST > > Works better rounding to integral seconds.
but this is bonkers. UTC never changes, it increases monotonically and it doesn't jump back or forward. My own timezone is CET so as soon as this weekend we go from CST to CET, but the time in Greenwich doesnt jump. What society does is changing the offset between it's employed wall clock time ie between 31 october and in April England uses UTC as local wall clock time and changes to and fro Western European Summer Time. Which means that this weekend we had 02:59:59 two times in the same night (sort of....) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
