On Friday 30 March 2018 09:08:54 D. R. Evans wrote:
I'm not sure where to report this:
I have three 24-hour TDE clocks in a panel: one on local time; one on
London time; and one on UTC. The London and UTC clocks are reading the same
time, but I discovered yesterday that in fact London is already on summer
time (and has been for nearly a week, I understand), so the London time
should be displaying a number one hour higher than UTC.
Doc
I've noticed that there is sometimes a lag for the time change. It must be
something to do with time servers, and what gets communicated globally. I'm
not sure if this quite answers your question, though.
My mobile phone, for example, always changes time a week earlier than the
actual local date for beginning and end of daylight savings time. A similar
glitch occurs with my digital television, except that there it is always late
to change. On the other hand, the time on my computer seems to be consistent
and reliable; but then, I don't have a set-up like yours, where I can see the
difference between UTC and GMT in real time.
Bill