Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2016 5 1.  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)
 05/03/2016   02:52:14   ( -79.27,-147.83) 05/03/2016   02:51:56  ( -79.27,-147.83)    0.27                18
 05/03/2016   03:41:34   (  79.50,  21.31) 05/03/2016   03:42:34  (  79.49,  21.21)    2.06                60
 05/05/2016   18:19:19   (  79.03, 158.91) 05/05/2016   18:18:13  (  79.03, 158.88)    0.69                66
 05/05/2016   19:08:38   ( -79.36, -31.41) 05/05/2016   19:08:49  ( -79.36, -31.39)    0.57                11
 05/08/2016   10:35:40   (  79.22, -84.03) 05/08/2016   10:35:03  (  79.22, -83.96)    1.33                37
 05/08/2016   11:25:00   ( -79.50,  85.47) 05/08/2016   11:25:40  ( -79.51,  85.58)    2.36                40
 05/11/2016   02:52:05   (  79.24,  32.00) 05/11/2016   02:51:58  (  79.24,  31.91)    1.85                 7
 05/11/2016   03:41:25   ( -79.53,-158.49) 05/11/2016   03:42:35  ( -79.52,-158.53)    0.95                70
 05/13/2016   18:19:09   ( -79.03, -21.05) 05/13/2016   18:18:14  ( -79.03, -21.17)    2.55                55