Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 2 16.  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)
 02/18/2018   03:41:59   (  79.68,  22.93) 02/18/2018   03:41:08  (  79.68,  22.97)    0.78                51
 02/18/2018   04:31:21   ( -79.87,-167.96) 02/18/2018   04:31:47  ( -79.88,-167.94)    0.50                26
 02/20/2018   19:58:29   (  79.69, 138.88) 02/20/2018   19:58:01  (  79.69, 138.75)    2.53                28
 02/20/2018   20:47:51   ( -79.88, -52.00) 02/20/2018   20:48:40  ( -79.88, -52.14)    2.85                49
 02/23/2018   12:14:55   (  79.81,-104.35) 02/23/2018   12:14:49  (  79.81,-104.33)    0.36                 6
 02/23/2018   13:04:17   ( -80.00,  64.82) 02/23/2018   13:05:28  ( -80.00,  64.83)    0.21                71
 02/26/2018   03:42:05   ( -79.61,-157.59) 02/26/2018   03:41:04  ( -79.60,-157.70)    2.44                61
 02/26/2018   04:31:23   (  79.89,  12.15) 02/26/2018   04:31:39  (  79.90,  12.30)    3.04                16
 02/28/2018   19:58:32   ( -79.73, -40.82) 02/28/2018   19:57:53  ( -79.73, -40.81)    0.23                39