Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 6.  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)
 09/08/2018   19:08:40   (  79.17, 147.44) 09/08/2018   19:08:13  (  79.17, 147.43)    0.31                27
 09/08/2018   19:58:01   ( -79.41, -43.40) 09/08/2018   19:58:52  ( -79.40, -43.51)    2.54                51
 09/11/2018   10:37:34   ( -73.96,  76.58) 09/11/2018   10:36:20  ( -74.24,  75.11)   54.31                74
 09/11/2018   11:25:06   (  79.27, -96.07) 09/11/2018   11:25:07  (  79.26, -96.12)    1.23                 1
 09/14/2018   02:52:11   ( -79.13,-148.70) 09/14/2018   02:51:22  ( -79.14,-148.60)    2.22                49
 09/14/2018   03:41:32   (  79.32,  20.15) 09/14/2018   03:42:01  (  79.32,  20.06)    1.94                29
 09/16/2018   19:08:37   ( -79.23, -32.23) 09/16/2018   19:08:16  ( -79.23, -32.17)    1.31                21
 09/16/2018   19:57:58   (  79.41, 136.62) 09/16/2018   19:58:55  (  79.41, 136.51)    2.40                57
 09/19/2018   10:35:45   (  78.94, -85.71) 09/19/2018   10:34:35  (  78.94, -85.79)    1.94                70