----- Original Message ----- From: "Magnus Danielson" <[email protected]> To: "Discussion of precise time and frequency measurement" <[email protected]> Sent: Tuesday, March 17, 2009 7:36 PM Subject: Re: [time-nuts] Loran-C & French Clocks
> Arnold, > > Arnold Tibus skrev: >> Magnus and all, >> >> interestlingly the discussion about GMT seem to be a never ending >> story, all over the world. As I know GMT was already renamed in >> the year 1925 ( or 1928 acc. other source ) to UT and >> "universal time coordinated" (U T C) (that) is standard since >> January 1, 1972. acc. "About the Time" : >> >> http://www.fai.org/astronautics/time.asp , >> look into the short overview to this history. >> >> "Does anyone know the exact difference between GMT and UTC?" >> - this question seem to be already very old, Magnus. > > Um. That's not the question I am asking. > >> Richard B. Langley wrote a summary trying to give the right >> answer with "A Few Facts Concerning GMT, UT, and the RGO ". >> >> His article can be found here: >> http://www.apparent-wind.com/gmt-explained.html >> >> It summarizes: >> "The Greenwich mean time, GMT, has today only an historical >> interest. It has been abandoned since the thirties for successively >> the T U 1, the T U 2 and finally, in 1972, for the much more regular >> universal time coordinated, U T C, that must be used >> for all present use." ! >> >> That is what I thought as well quite a while. >> But I had to change ever so often all kind of scientific and >> technical units, and I see the need to adopt it, I am sure we have >> to be open for more steps into the future. Learning will never end...! > > You brings me no new knowledge, only a few more links, which I suspect > repeats what my sources already says to me. > > I already know what GMT is in the several senses it is. For me it is > clearly not UTC, except for the GMT transmissions done by BBC. > > I object to the use of GMT when it should say UTC, they should not be > used interchangeably when talking about international time. > > The question I am asking is really about which is the time-scale > accepted for national time in various countries. > > So far: > > UTC based: France, Sweden > GMT based (UT1?): Great Brittian, Denmark > > I suspect several countries (such as US, Germany etc. etc) to be UTC > based, but I do not know for sure. > > As you see, this is a quite different question then asking about "what > is GMT" or "what timezone is country X". > > Cheers, > Magnus This will answers all the questions. http://en.wikipedia.org/wiki/GMT . _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
