International Earth Rotation And Reference Systems Service
The International Earth Rotation and Reference Systems Service (IERS), formerly the International Earth Rotation Service, is the body responsible for maintaining global time and reference frame standards, notably through its Earth Orientation Parameter (EOP) and International Celestial Reference System (ICRS) groups.
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“Not a single man on earth knows from his own experience the how and where of his birth, only from tradition, which is often very uncertain.”
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