Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 12 28.  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)
 12/29/2018   19:08:26   (  79.57, 150.20) 12/29/2018   19:08:03  (  79.57, 150.20)    0.22                23
 12/29/2018   19:57:47   ( -79.79, -40.53) 12/29/2018   19:58:42  ( -79.78, -40.63)    2.04                55
 01/01/2019   10:36:42   ( -76.44,  83.43) 01/01/2019   10:35:28  ( -76.65,  82.38)   35.64                74
 01/01/2019   11:24:52   (  79.71, -92.90) 01/01/2019   11:24:53  (  79.72, -92.75)    3.03                 1
 01/04/2019   02:52:02   ( -79.47,-146.32) 01/04/2019   02:51:11  ( -79.47,-146.38)    1.29                51
 01/04/2019   03:41:21   (  79.73,  23.18) 01/04/2019   03:41:47  (  79.73,  23.18)    0.02                26
 01/06/2019   19:08:28   ( -79.61, -29.47) 01/06/2019   19:08:01  ( -79.62, -29.38)    2.02                27
 01/06/2019   19:57:50   (  79.76, 139.23) 01/06/2019   19:58:41  (  79.75, 139.09)    2.81                51
 01/09/2019   11:24:56   ( -79.64,  86.57) 01/09/2019   11:24:54  ( -79.63,  86.53)    0.85                 2