Abstract
From OAFA's Photoelectric Astrolabe Pa II systematic observations of stellar fundamental groups on period 1992 - 2002 we have determined (UT0-UTC) Time Variation Curve corresponding to Earth Rotation and its comparison with data (UT1-UTC) given by International Earth Rotation Service (IERS)
We have obtained values of the curve from the average of observations of each night with their respective weights, and have corrected them by Pole Movement.
We have also studied the possibility of relations between anomalies on Time Variation (UT0-UTC) and important earthquakes happened on the neighborhood of the Astrolabe.