USGS - The following is from the United States Geological Survey,  National Earthquake   Information   Center:    Preliminary   hypocenter   for earthquake of 1999  Dec  29,  SANTA  CRUZ  ISLANDS:   latitude  11.0 degrees  south, longitude 165.4 degrees east, origin time 13 29 19.2 utc, depth normal, magnitude 6.8 ms.  There have been no reports  of damage.
 
The following is from the United States Geological Survey,  National Earthquake   Information   Center:    preliminary   hypocenter   for earthquake of 1999 dec 29, CHILE-ARGENTINA BORDER REGION, about  115 miles  (190  km)  SE  of Calama, Chile:  latitude 23.7 degrees south longitude 67.7 degrees west origin time 12 57 57.2 utc depth normal,
magnitude 5.8 mb.