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