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   02:52:13   (  79.10,  31.10) 09/06/2018   02:51:18  (  79.10,  31.14)    0.91                55
 09/06/2018   03:41:34   ( -79.34,-159.76) 09/06/2018   03:41:57  ( -79.33,-159.82)    1.30                23
 09/08/2018   19:08:39   (  79.20, 147.59) 09/08/2018   19:08:12  (  79.20, 147.59)    0.26                27
 09/08/2018   19:58:01   ( -79.40, -43.48) 09/08/2018   19:58:52  ( -79.39, -43.61)    2.63                51
 09/11/2018   10:37:33   ( -74.00,  76.65) 09/11/2018   10:36:19  ( -74.27,  75.19)   53.99                74
 09/11/2018   11:25:06   (  79.25, -96.18) 09/11/2018   11:25:07  (  79.25, -96.22)    0.90                 1
 09/14/2018   02:52:11   ( -79.16,-148.56) 09/14/2018   02:51:22  ( -79.16,-148.43)    2.69                49
 09/14/2018   03:41:32   (  79.34,  20.29) 09/14/2018   03:42:01  (  79.34,  20.22)    1.28                29
 09/16/2018   19:08:36   ( -79.25, -32.11) 09/16/2018   19:08:15  ( -79.25, -32.00)    2.22                21