Bill Ricker wrote: >On Tue, Jul 11, 2017 at 4:07 AM, Binarus <li...@binarus.de> wrote: >> and the next law could determine the switch to >> happen at 08:48:27 am, and > >It could in theory, but would be beyond atypical.
There have historically been some DST rules calling for changes at 00:01. For example, America/Moncton (New Brunswick, Canada) changed 00:01->01:01 and 00:01->23:01 from 1993 to 2006. The 00:01->23:01 change is particularly unusual for turning the date back. The Olson database also shows some one-off changes (not DST changes) that were not minute-aligned in the previously-prevailing local time, but these are only when changing from local mean time to a UT-based standard time, at a time that's minute-aligned in the new standard time. >(The file format and software should handle 08:48,not sure about 08:48:27 ?) The file format, and all the software I know about, can handle transitions at any second. -zefram
