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. > >> [Or, actually, given that in the post from 2025-10-20 the citation line >> mentions "British Summer Time" instead... is your client possibly >> mentioning the time zone in which the *reply* is being composed?] > > When I write a message, whether reply or original, I expect it to carry the > time and date when I Sent it. That is, when I clicked the Send button, or > much > more likely, when I hit Ctrl-Return. Do you expect something else? I'm talking about the time present in the citation attribution lines before quoted text in your posts. 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. > 1. https://www.rmg.co.uk/stories/time/greenwich-mean-time-gmt -- Nuno Silva
