Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 6 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)
 07/01/2017   02:53:32   (  74.80,  14.49) 07/01/2017   02:52:19  (  75.02,  13.05)   48.38                73
 07/01/2017   03:41:19   ( -79.39,-159.33) 07/01/2017   03:41:20  ( -79.40,-159.28)    1.14                 1
 07/03/2017   19:08:26   (  79.17, 147.48) 07/03/2017   19:07:36  (  79.17, 147.40)    1.85                50
 07/03/2017   19:57:46   ( -79.46, -42.99) 07/03/2017   19:58:13  ( -79.46, -43.05)    1.30                27
 07/06/2017   11:24:49   (  79.35, -95.49) 07/06/2017   11:24:24  (  79.36, -95.37)    2.58                25
 07/06/2017   12:14:13   ( -79.49,  73.06) 07/06/2017   12:15:06  ( -79.48,  72.91)    3.15                53
 07/09/2017   02:53:48   ( -73.97,-167.50) 07/09/2017   02:52:34  ( -74.26,-169.02)   56.02                74
 07/09/2017   03:41:16   (  79.41,  20.77) 07/09/2017   03:41:17  (  79.41,  20.82)    1.13                 1
 07/11/2017   19:08:24   ( -79.21, -32.26) 07/11/2017   19:07:33  ( -79.22, -32.17)    2.09                51