BULLETINS B, C, D
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Bulletin B (from 2009): the relooked monthly Bulletin B contains Earth orientation parameters (x,y,UT,dX,dY) at 1-day over the last 60 days preceding its distribution
Old Bulletin B stopped in January 2010 : the monthly Bulletin B contains Earth orientation parameters (x,y,UT,dPsi,dEps) at 1-day and 5-days interval over the last 60 days preceding its distribution.
Bulletin C: the Bulletin C contains announcement of the leap seconds in UTC.
Bulletin D: the Bulletin D contains announcement of the value of dUT1 to be transmitted with time signals (dUT1 = UT1-UTC expressed with a precision of +/-0.1s).