Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 24.  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)
 03/24/2018   19:58:34   (  79.58, 137.90) 03/24/2018   19:58:08  (  79.57, 137.79)    2.38                26
 03/24/2018   20:47:55   ( -79.81, -52.77) 03/24/2018   20:48:46  ( -79.81, -52.78)    0.20                51
 03/27/2018   11:27:27   ( -74.57,  65.71) 03/27/2018   11:26:14  ( -74.83,  63.96)   59.00                73
 03/27/2018   12:15:00   (  79.67,-105.56) 03/27/2018   12:15:01  (  79.67,-105.56)    0.33                 1
 03/30/2018   03:42:06   ( -79.54,-158.24) 03/30/2018   03:41:17  ( -79.54,-158.23)    0.15                49
 03/30/2018   04:31:25   (  79.79,  11.24) 03/30/2018   04:31:53  (  79.80,  11.39)    3.22                28
 04/01/2018   19:58:32   ( -79.59, -42.03) 04/01/2018   19:58:11  ( -79.58, -42.14)    2.44                21
 04/01/2018   20:47:51   (  79.84, 127.46) 04/01/2018   20:48:47  (  79.84, 127.47)    0.32                56
 04/04/2018   11:25:37   (  79.43, -94.89) 04/04/2018   11:24:26  (  79.43, -94.98)    1.76                71
 04/04/2018   12:14:56   ( -79.74,  74.96) 04/04/2018   12:15:02  ( -79.74,  75.05)    1.89                 6
 04/07/2018   03:42:01   (  79.58,  22.04) 04/07/2018   03:41:17  (  79.59,  22.16)    2.69                44