Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 21.  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   (  79.84,-104.09) 02/23/2018   12:14:48  (  79.85,-103.94)    3.06                 6
 02/23/2018   13:04:16   ( -80.03,  65.06) 02/23/2018   13:05:27  ( -80.03,  65.20)    2.89                71
 02/26/2018   03:42:02   ( -79.70,-156.92) 02/26/2018   03:41:01  ( -79.71,-156.80)    2.49                61
 02/26/2018   04:31:23   (  79.87,  12.03) 02/26/2018   04:31:40  (  79.88,  12.10)    1.56                17
 02/28/2018   19:58:31   ( -79.73, -40.82) 02/28/2018   19:57:53  ( -79.74, -40.76)    1.43                38
 02/28/2018   20:47:51   (  79.93, 128.40) 02/28/2018   20:48:31  (  79.93, 128.42)    0.43                40
 03/03/2018   12:14:58   ( -79.79,  75.52) 03/03/2018   12:14:43  ( -79.79,  75.55)    0.83                15
 03/03/2018   13:04:18   (  79.99,-115.25) 03/03/2018   13:05:21  (  79.99,-115.26)    0.31                63
 03/06/2018   03:42:04   (  79.64,  22.66) 03/06/2018   03:40:55  (  79.65,  22.69)    0.47                69