Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 11.  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)
 09/14/2018   02:52:11   ( -79.15,-148.57) 09/14/2018   02:51:22  ( -79.16,-148.44)    2.84                49
 09/14/2018   03:41:32   (  79.35,  20.32) 09/14/2018   03:42:01  (  79.34,  20.25)    1.41                29
 09/16/2018   19:08:36   ( -79.24, -32.12) 09/16/2018   19:08:15  ( -79.25, -32.01)    2.49                21
 09/16/2018   19:57:57   (  79.43, 136.76) 09/16/2018   19:58:54  (  79.43, 136.70)    1.31                57
 09/19/2018   10:35:43   (  79.00, -85.37) 09/19/2018   10:34:33  (  79.00, -85.37)    0.22                70
 09/19/2018   11:25:02   ( -79.33,  84.30) 09/19/2018   11:25:09  ( -79.34,  84.42)    2.55                 7
 09/22/2018   02:52:08   (  79.12,  31.24) 09/22/2018   02:51:26  (  79.12,  31.27)    0.74                42
 09/22/2018   03:41:27   ( -79.45,-159.03) 09/22/2018   03:42:02  ( -79.45,-158.88)    3.03                35
 09/24/2018   19:08:33   (  79.24, 147.84) 09/24/2018   19:08:19  (  79.24, 147.93)    1.98                14