Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 8 31.  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)
 08/31/2018   19:08:40   ( -79.23, -32.18) 08/31/2018   19:08:07  ( -79.24, -32.08)    2.18                33
 08/31/2018   19:58:02   (  79.39, 136.50) 08/31/2018   19:58:47  (  79.39, 136.36)    3.17                45
 09/03/2018   11:25:07   ( -79.30,  84.13) 09/03/2018   11:25:02  ( -79.30,  84.15)    0.34                 5
 09/03/2018   12:14:26   (  79.57,-106.40) 09/03/2018   12:15:38  (  79.57,-106.33)    1.57                72
 09/06/2018   02:52:14   (  79.09,  31.01) 09/06/2018   02:51:19  (  79.09,  31.05)    0.79                55
 09/06/2018   03:41:35   ( -79.33,-159.83) 09/06/2018   03:41:58  ( -79.32,-159.90)    1.52                23
 09/08/2018   19:08:40   (  79.18, 147.50) 09/08/2018   19:08:13  (  79.18, 147.49)    0.42                27
 09/08/2018   19:58:01   ( -79.42, -43.30) 09/08/2018   19:58:52  ( -79.41, -43.43)    2.92                51
 09/11/2018   10:37:36   ( -73.83,  76.27) 09/11/2018   10:36:22  ( -74.11,  74.77)   55.64                74
 09/11/2018   11:25:06   (  79.24, -96.27) 09/11/2018   11:25:07  (  79.24, -96.34)    1.31                 1
 09/14/2018   02:52:11   ( -79.14,-148.64) 09/14/2018   02:51:22  ( -79.15,-148.54)    2.13                49