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	Last version Previous Bulletins B Read me
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.	Old Bulletins B Explanatory Supplement
Bulletin C: the Bulletin C contains announcement of the leap seconds in UTC.	Guide for Bulletin C Last Bulletin C Previous Bulletins C TAI-UTC since 1961 Adjustements of UTC since 1961
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).	Last Bulletin D Previous Bulletins D Guide for Bulletin D