Bulletin B

IERS Bulletin B provides current information on the Earth's orientation in the IERS Reference System. This includes Universal Time, coordinates of the terrestrial pole, and celestial pole offsets. IERS Bulletin B consists of 5 sections:Section 1: Daily final values at 0:00 UT of x, y, UT1-UTC, dX, dY, and their uncertainties. Time span: one month with final values, one month with preliminary values.Section 2: Daily final values at 0:00 UT of celestial pole offsets dPsi and dEps in the IAU 1980 system and their uncertainties.Section 3: Earth angular velocity (daily estimates of LOD and OMEGA with their uncertainties).Section 4: Information on the time scales and announcement of occurring leap seconds.Section 5: Average formal precision of the individual and combined series contributing or not to the combination and their agreement with the combination.