Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 10 9.  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)
 10/10/2018   19:08:25   (  79.49, 149.52) 10/10/2018   19:08:09  (  79.49, 149.50)    0.42                16
 10/10/2018   19:57:46   ( -79.73, -41.10) 10/10/2018   19:58:47  ( -79.73, -41.16)    1.29                61
 10/13/2018   10:35:34   ( -79.25,  96.16) 10/13/2018   10:34:25  ( -79.24,  96.05)    2.57                69
 10/13/2018   11:24:52   (  79.53, -94.28) 10/13/2018   11:25:01  (  79.53, -94.41)    2.69                 9
 10/16/2018   02:51:57   ( -79.41,-146.90) 10/16/2018   02:51:12  ( -79.41,-146.92)    0.37                45
 10/16/2018   03:41:16   (  79.65,  22.43) 10/16/2018   03:41:49  (  79.65,  22.42)    0.35                33
 10/18/2018   19:08:23   ( -79.49, -30.49) 10/18/2018   19:08:02  ( -79.49, -30.48)    0.26                21
 10/18/2018   19:57:42   (  79.72, 138.86) 10/18/2018   19:58:39  (  79.73, 138.87)    0.37                57
 10/21/2018   10:35:39   (  78.86, -86.14) 10/21/2018   10:34:25  (  78.91, -86.24)    6.02                74