Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 8.  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, 147.39) 09/08/2018   19:08:13  (  79.17, 147.37)    0.40                27
 09/08/2018   19:58:01   ( -79.40, -43.46) 09/08/2018   19:58:52  ( -79.39, -43.58)    2.51                51
 09/11/2018   10:37:34   ( -73.95,  76.55) 09/11/2018   10:36:20  ( -74.23,  75.08)   54.46                74
 09/11/2018   11:25:06   (  79.26, -96.13) 09/11/2018   11:25:07  (  79.26, -96.18)    1.25                 1
 09/14/2018   02:52:12   ( -79.12,-148.76) 09/14/2018   02:51:23  ( -79.13,-148.67)    2.24                49
 09/14/2018   03:41:32   (  79.35,  20.35) 09/14/2018   03:42:01  (  79.34,  20.26)    1.98                29
 09/16/2018   19:08:37   ( -79.22, -32.30) 09/16/2018   19:08:16  ( -79.22, -32.24)    1.28                21
 09/16/2018   19:57:58   (  79.40, 136.56) 09/16/2018   19:58:55  (  79.40, 136.44)    2.50                57
 09/19/2018   10:35:45   (  78.93, -85.76) 09/19/2018   10:34:35  (  78.93, -85.86)    2.08                70
 09/19/2018   11:25:03   ( -79.31,  84.16) 09/19/2018   11:25:10  ( -79.31,  84.18)    0.52                 7
 09/22/2018   02:52:10   (  79.06,  30.88) 09/22/2018   02:51:28  (  79.05,  30.78)    2.33                42