Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 20.  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)
 02/23/2018   12:14:54   (  79.86,-103.97) 02/23/2018   12:14:48  (  79.86,-103.82)    2.93                 6
 02/23/2018   13:04:17   ( -80.01,  64.90) 02/23/2018   13:05:28  ( -80.02,  65.04)    2.73                71
 02/26/2018   03:42:02   ( -79.68,-157.06) 02/26/2018   03:41:01  ( -79.69,-156.96)    2.16                61
 02/26/2018   04:31:22   (  79.89,  12.16) 02/26/2018   04:31:39  (  79.89,  12.22)    1.24                17
 02/28/2018   19:58:30   ( -79.75, -40.68) 02/28/2018   19:57:52  ( -79.75, -40.64)    0.91                38
 02/28/2018   20:47:51   (  79.91, 128.26) 02/28/2018   20:48:31  (  79.92, 128.25)    0.18                40
 03/03/2018   12:14:59   ( -79.77,  75.39) 03/03/2018   12:14:44  ( -79.78,  75.39)    0.26                15
 03/03/2018   13:04:19   (  79.97,-115.39) 03/03/2018   13:05:22  (  79.97,-115.44)    1.05                63
 03/06/2018   03:42:05   (  79.63,  22.55) 03/06/2018   03:40:56  (  79.63,  22.52)    0.63                69