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1991-12-30
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Recommendation B.11
LEGAL TIME; USE OF THE TERM UTC
(Geneva, 1980)
The CCITT,
considering
(a) that according to CCIR Recommendation 460-3 all standard-frequency and
time-signal emissions should conform to Coordinated Universal Time (UTC);
(b) that since 1972 UTC has been available as a worldwide time reference;
(c) that in 1975 the General Conference of Weights and Measures (CGPM)
recommended the use of UTC as the basis of civil time;
(d) that other scientific organizations, particularly the International
Astronomical Union (IAU) and the International Union of Radio Science (URSI) have
recommended the general use of UTC;
(e) that UTC enables the time of events to be determined with an
uncertainty of 1 ms;
(f) that according to CCIR Recommendation 536 and in accordance with the
Recommendation of the General Conference of Weights and Measures the designation
UTC is to be used in all languages;
(g) that the World Administrative Radio Conference (Geneva, 1979) has
decided that UTC shall be used in international radiocommunication activities;
(h) that in accordance with Appendix 2 to the Telegraph and Telephone
Regulations, Geneva, 1973 (relating to reciprocal exchange of information through
the medium of the General Secretariat) Resolution No. 1 of these Regulations
recommends Administrations inter alia to inform the Secretary-General of the
legal time they apply.
unanimously recommends
that UTC should be used to designate the time in all other international
telecommunication activities (including operational information) and in all
service documents of the International Telecommunication Union.
Fascicle I.3 - Rec. B.11 PAGE1