Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 7 3.  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)    2.21                50
 07/03/2017   19:57:46   ( -79.46, -42.99) 07/03/2017   19:58:13  ( -79.46, -43.05)    1.47                27
 07/06/2017   11:24:50   (  79.32, -95.70) 07/06/2017   11:24:25  (  79.33, -95.61)    2.01                25
 07/06/2017   12:14:10   ( -79.60,  73.87) 07/06/2017   12:15:02  ( -79.61,  74.00)    2.82                52
 07/09/2017   02:53:53   ( -73.72,-168.06) 07/09/2017   02:52:40  ( -73.96,-169.75)   58.98                73
 07/09/2017   03:41:17   (  79.38,  20.57) 07/09/2017   03:41:18  (  79.38,  20.58)    0.26                 1
 07/11/2017   19:08:24   ( -79.22, -32.21) 07/11/2017   19:07:33  ( -79.22, -32.17)    0.92                51
 07/11/2017   19:57:44   (  79.43, 136.82) 07/11/2017   19:58:11  (  79.43, 136.77)    1.11                27
 07/14/2017   11:24:51   ( -79.28,  84.02) 07/14/2017   11:24:26  ( -79.28,  84.02)    0.13                25
 07/14/2017   12:14:10   (  79.52,-106.69) 07/14/2017   12:15:03  (  79.52,-106.78)    2.01                53
 07/17/2017   02:53:46   (  73.87,  12.29) 07/17/2017   02:52:33  (  74.13,  10.68)   56.98                73