Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 27.  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)
 03/30/2018   03:42:05   ( -79.55,-158.22) 03/30/2018   03:41:16  ( -79.55,-158.20)    0.55                49
 03/30/2018   04:31:26   (  79.73,  10.73) 03/30/2018   04:31:55  (  79.72,  10.59)    2.96                29
 04/01/2018   19:58:32   ( -79.59, -42.02) 04/01/2018   19:58:11  ( -79.59, -42.10)    1.74                21
 04/01/2018   20:47:51   (  79.84, 127.49) 04/01/2018   20:48:47  (  79.84, 127.54)    0.92                56
 04/04/2018   11:25:36   (  79.47, -94.61) 04/04/2018   11:24:25  (  79.47, -94.64)    0.81                71
 04/04/2018   12:14:56   ( -79.74,  74.97) 04/04/2018   12:15:02  ( -79.75,  75.11)    2.97                 6
 04/07/2018   03:42:03   (  79.51,  21.53) 04/07/2018   03:41:20  (  79.50,  21.42)    2.24                43
 04/07/2018   04:31:22   ( -79.81,-168.61) 04/07/2018   04:31:56  ( -79.81,-168.52)    1.87                34
 04/09/2018   19:58:28   (  79.58, 137.89) 04/09/2018   19:58:13  (  79.57, 137.74)    3.11                15