On Tue, Jan 2, 2024 at 1:26 PM brian.inglis--- via tz <tz@iana.org> wrote:
there is no change visible with zdump
That's true, but zdump (contrary to its name) doesn't just dump the content of a TZif file. This is the 2023c/2023d difference I see in the *raw*, slim Europe/London data, just as Derick reports. @@ -176,6 +176,6 @@ 782874000 [type=2] gmtoff= 0 is_dst=F isstd=0 isgmt=0 abbr="GMT" 796179600 [type=1] gmtoff= 3600 is_dst=T isstd=0 isgmt=0 abbr="BST" 814323600 [type=2] gmtoff= 0 is_dst=F isstd=0 isgmt=0 abbr="GMT" - 828234000 [type=1] gmtoff= 3600 is_dst=T isstd=0 isgmt=0 abbr="BST" + 820454400 [type=2] gmtoff= 0 is_dst=F isstd=0 isgmt=0 abbr="GMT" Future Specification: GMT0BST,M3.5.0/1,M10.5.0