Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 24.  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)
 09/24/2018   19:08:35   (  79.23, 147.80) 09/24/2018   19:08:19  (  79.23, 147.88)    1.78                16
 09/24/2018   19:57:57   ( -79.43, -43.25) 09/24/2018   19:58:59  ( -79.42, -43.37)    2.55                62
 09/27/2018   10:35:45   ( -78.95,  94.34) 09/27/2018   10:34:39  ( -78.95,  94.31)    0.70                66
 09/27/2018   11:25:04   (  79.22, -96.36) 09/27/2018   11:25:16  (  79.21, -96.51)    3.16                12
 09/30/2018   02:52:09   ( -79.10,-148.86) 09/30/2018   02:51:30  ( -79.11,-148.83)    0.64                39
 09/30/2018   03:41:28   (  79.37,  20.46) 09/30/2018   03:42:07  (  79.36,  20.40)    1.38                39
 10/02/2018   19:08:34   ( -79.25, -32.06) 10/02/2018   19:08:22  ( -79.26, -31.96)    2.33                12
 10/02/2018   19:57:54   (  79.47, 137.02) 10/02/2018   19:59:00  (  79.47, 137.06)    0.80                66
 10/05/2018   10:35:43   (  78.94, -85.74) 10/05/2018   10:34:42  (  78.93, -85.84)    2.32                61
 10/05/2018   11:25:03   ( -79.24,  83.72) 10/05/2018   11:25:19  ( -79.23,  83.63)    2.01                16
 10/08/2018   02:52:07   (  79.12,  31.22) 10/08/2018   02:51:33  (  79.11,  31.24)    0.44                34