subscription to receive bulletins by e-mail
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"Relooked" Bulletin B : 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
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B : 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
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Bulletin C: the Bulletin C contains announcement of the leap seconds in UTC.
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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).
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