Coordinated Universal Time 1 : A coordinated time scale, maintained by the Bureau Interntionale des Poids et Mesures (BIPM), which forms the basis of a coordinated dissemination of standard frequencies and time signals
NFPA 1221 Standard for the Installation, Maintenance, and Use of Emergency Services Communications Systems, 2007 ed. (Std: Install, Maint, and Use of Emr Srvc Commun - Amer) {391 NFC}