Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 12 9.  Predictions up to the next  14.0 days:

     Date     Time(AURA) AURA Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/10/2016   10:35:14   ( -79.50,  97.98) 12/10/2016   10:34:31  ( -79.51,  98.12)    3.06                43
 12/10/2016   11:24:36   (  79.65, -93.34) 12/10/2016   11:25:11  (  79.64, -93.41)    1.50                35
 12/13/2016   02:51:42   ( -79.53,-145.92) 12/13/2016   02:51:25  ( -79.53,-145.93)    0.25                17
 12/13/2016   03:41:01   (  79.79,  23.58) 12/13/2016   03:42:01  (  79.79,  23.67)    1.83                60
 12/15/2016   18:18:47   (  79.36, 161.12) 12/15/2016   18:17:38  (  79.36, 161.14)    0.52                69
 12/15/2016   19:08:09   ( -79.56, -29.87) 12/15/2016   19:08:18  ( -79.55, -30.00)    2.59                 9
 12/18/2016   10:35:13   (  79.45, -82.38) 12/18/2016   10:34:30  (  79.44, -82.41)    0.84                43
 12/18/2016   11:24:33   ( -79.72,  87.20) 12/18/2016   11:25:07  ( -79.73,  87.31)    2.38                34
 12/21/2016   02:51:39   (  79.53,  34.09) 12/21/2016   02:51:22  (  79.53,  34.03)    1.22                17