On Thursday, 30 October 2025 01:12:25 Greenwich Mean Time Nuno Silva wrote: > On 2025-10-29, Peter Humphrey wrote: > > On Wednesday, 29 October 2025 01:29:02 Greenwich Mean Time Nuno Silva wrote: > >> On 2025-10-28, Peter Humphrey wrote: > >> > On Monday, 20 October 2025 15:31:31 Greenwich Mean Time Peter Humphrey > >> > >> > wrote: > >> [Wait, what I see is 15:31:31 +01:00, or 14:31:31Z, wouldn't that be > >> 14:31:31 GMT, or is GMT supposed to follow WEST?] > > > > GMT does not follow anything, and especially not France, which lost the > > primacy struggle in the 19th century. The global longitude reference was > > defined to pass through the Royal Greenwich Observatory, not somewhere in > > Paris. [1] > > I think France uses the Central time (CET/CEST), Western time (WET/WEST) > should also be London time, except that it seems it might have other > legal names in the UK? > > > Each nation sets its own dates of summer time, as far as I know. > > I don't know what's the current status in the UK, but at least EU > countries all follow the same date and time for DST changes: last Sunday > of March and last Sunday of October at 01:00 UTC.
The current status in the UK is the same as it has always been since that international standard was established: we use Greenwich Mean Time. The clocks are advanced one hour to make British Summer Time. We don't have names for anyone else's custom in times and dates; why should we? We also don't have a concept of daylight saving; nothing is saved, after all. > Look at the dates: on 2025-10-20, 15:31:31 London time would be 14:31:31 > GMT. Your *reply* was composed after DST ended, but the quoted message is > from before last Sunday, so that timestamp ought to say "British Summer > Time". Yet the named timezone named for that quoted message is the non-DST > one. I have no messages in KMail with that date, neither in this thread nor in the waste bin. I looked yesterday, and I've checked again today. So I cannot either confirm or deny what you say. Let's just drop the whole thing. -- Regards, Peter.
