gwyn@brl-smoke.ARPA (Doug Gwyn ) (12/20/87)
I need an authoritative answer to the question, "What is the correct official name to use in talking about the international Universal Time standard?" I have been told UTC (Universal Time Coordinated) and UT0, and I've also heard of "Coordinated Universal Time" and "Universal Coordinated Time". Please don't respond unless you're sure you know the answer. Best would be someone who has to deal with these matters all the time, for example NBS staff. -- Gwyn@BRL.MIL
jeffr@aai2..istc.sri.com (Jeff Rininger) (12/22/87)
>I need an authoritative answer to the question, "What is the correct >official name to use in talking about the international Universal Time >standard?" "The time referred to in the announcements is "Coordinated Universal Time (UTC). It is coordinated through international agreements by the International Time Bureau (BIH) so that time signals broadcast from the many stations throughout the world will be in close agreement." (p. 3) "Somewhat surprisingly, however, some users of time signals need time which is not this stable. In applications such as very precise navigation and satellite tracking, which must be referenced to the rotating earth, a time scale that speeds up and slows down with the earth's rotation rate must be used. The particular time scale needed is known as UT1 and is inferred from astronomical observations." (p. 6) - (from "NBS Time & Frequency Dissemination Services," NBS Special Publication 432, September, 1979.)
koko@uthub.toronto.edu (M. Kokodyniak) (12/22/87)
In article <6888@brl-smoke.ARPA>, gwyn@brl-smoke.ARPA (Doug Gwyn ) writes: > I need an authoritative answer to the question, "What is the correct > official name to use in talking about the international Universal Time > standard?" It is called "Coordinated Universal Time." This can be verified by listening to WWV in the shortwave band at 2.5, 5, 7.5 and 10 MHz.
ct@dde.uucp (Claus Tondering) (12/22/87)
In article <6888@brl-smoke.ARPA> gwyn@brl-smoke.ARPA (Doug Gwyn ) writes: >I need an authoritative answer to the question, "What is the correct >official name to use in talking about the international Universal Time >standard?" I have been told UTC (Universal Time Coordinated) and UT0, >and I've also heard of "Coordinated Universal Time" and "Universal >Coordinated Time". > >Please don't respond unless you're sure you know the answer. Best >would be someone who has to deal with these matters all the time, >for example NBS staff. I'm not part of the NBS staff, but nevertheless, here goes... ISO (the International Organization for Standardization) has in 1986 published a "Draft International Standard" called ISO/DIS 8601, in which you find the following wording: ) 3.2. _Coordinated Universal Time (UTC)_: The time scale maintained ) by the Bureau Internationale de l'Heure (International Time ) Bureau) that forms the basis of a coordinated dissemination ) of standard frequencies and time signalals. ) ) _Note 1_: The source of this definition is Reccomendation 460-2 ) of the Consultative Committee on International Radio (CCIR). ) CCIR has also defined the acronym for Coordinated Universal ) Time as UTC. ) ) _Note 2_: UTC is often referred to as Greenwich Mean Time (GMT) ) and appropriate time signals are regularly broadcast. I hope this is the information you needed. Merry Christmas! -- Claus Tondering Dansk Data Elektronik A/S, Herlev, Denmark E-mail: ct@dde.uucp or ...!uunet!mcvax!diku!dde!ct
robert@uop.edu (Hi how ya doin) (12/24/87)
In article <674@uthub.toronto.edu>, koko@uthub.toronto.edu (M. Kokodyniak) writes: > It is called "Coordinated Universal Time." This can be verified by > listening to WWV in the shortwave band at 2.5, 5, 7.5 and 10 MHz. I can see the problem though, WWV says CUT, but most references I read show UTC, and die hards still use GMT. The military uses hh/mm/ss in ZULU, even this may change, as the military books I have here in the store are not always recent.
sfq@bcd-dyn.UUCP (sfq) (12/29/87)
> ) 3.2. _Coordinated Universal Time (UTC)_:
"UTC" is a FRENCH acronym. That's why it looks backwards.
--
Stanley F. Quayle UUCP: cbosgd!osu-cis!bcd-dyn!sfq
(614) 424-4052 USPS: 505 King Ave., Columbus, OH 43201
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My opinions are mine. What more of a disclaimer could you need?akt@COS.COM (Amit Thakur) (01/03/88)
A related discussion has been going on in sci.astro recently. Although UTC may be the official CCIR acronym, it seems that more and more people are just using "Universal Time." Cheers, akt Just for kicks, look up how time is represented in ASN.1, put out by ISO/CCITT. They refer to "Generalized Time."