Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 4.  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)
 09/06/2018   02:52:14   (  79.10,  31.09) 09/06/2018   02:51:19  (  79.10,  31.13)    0.87                55
 09/06/2018   03:41:34   ( -79.33,-159.77) 09/06/2018   03:41:57  ( -79.33,-159.83)    1.23                23
 09/08/2018   19:08:39   (  79.20, 147.58) 09/08/2018   19:08:12  (  79.19, 147.57)    0.31                27
 09/08/2018   19:58:00   ( -79.43, -43.24) 09/08/2018   19:58:51  ( -79.42, -43.35)    2.59                51
 09/11/2018   10:37:33   ( -73.99,  76.65) 09/11/2018   10:36:19  ( -74.27,  75.18)   54.03                74
 09/11/2018   11:25:06   (  79.25, -96.19) 09/11/2018   11:25:07  (  79.25, -96.24)    1.09                 1
 09/14/2018   02:52:11   ( -79.15,-148.57) 09/14/2018   02:51:22  ( -79.16,-148.46)    2.46                49
 09/14/2018   03:41:32   (  79.34,  20.27) 09/14/2018   03:42:01  (  79.34,  20.20)    1.62                29
 09/16/2018   19:08:37   ( -79.24, -32.12) 09/16/2018   19:08:16  ( -79.25, -32.03)    1.79                21