Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 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)
 07/03/2017   19:08:27   (  79.14, 147.26) 07/03/2017   19:07:37  (  79.13, 147.16)    2.27                50
 07/03/2017   19:57:46   ( -79.46, -42.98) 07/03/2017   19:58:13  ( -79.46, -43.05)    1.64                27
 07/06/2017   11:24:50   (  79.32, -95.69) 07/06/2017   11:24:25  (  79.33, -95.62)    1.69                25
 07/06/2017   12:14:10   ( -79.61,  73.89) 07/06/2017   12:15:02  ( -79.61,  74.01)    2.43                52
 07/09/2017   02:54:00   ( -73.36,-168.82) 07/09/2017   02:52:47  ( -73.62,-170.58)   62.45                73
 07/09/2017   03:41:17   (  79.38,  20.59) 07/09/2017   03:41:18  (  79.38,  20.57)    0.47                 1
 07/11/2017   19:08:25   ( -79.19, -32.42) 07/11/2017   19:07:34  ( -79.19, -32.44)    0.34                51
 07/11/2017   19:57:44   (  79.44, 136.85) 07/11/2017   19:58:11  (  79.43, 136.75)    2.30                27
 07/14/2017   11:24:52   ( -79.25,  83.82) 07/14/2017   11:24:27  ( -79.24,  83.74)    1.76                25