Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 9 10.  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)
 09/11/2018   10:37:34   ( -73.96,  76.59) 09/11/2018   10:36:20  ( -74.24,  75.12)   54.29                74
 09/11/2018   11:25:05   (  79.27, -96.05) 09/11/2018   11:25:06  (  79.27, -96.10)    1.06                 1
 09/14/2018   02:52:11   ( -79.13,-148.70) 09/14/2018   02:51:22  ( -79.14,-148.59)    2.55                49
 09/14/2018   03:41:31   (  79.36,  20.42) 09/14/2018   03:42:00  (  79.36,  20.36)    1.52                29
 09/16/2018   19:08:37   ( -79.22, -32.25) 09/16/2018   19:08:16  ( -79.23, -32.16)    2.00                21
 09/16/2018   19:57:57   (  79.45, 136.88) 09/16/2018   19:58:54  (  79.44, 136.81)    1.63                57
 09/19/2018   10:35:44   (  78.98, -85.48) 09/19/2018   10:34:34  (  78.98, -85.51)    0.70                70
 09/19/2018   11:25:03   ( -79.31,  84.20) 09/19/2018   11:25:10  ( -79.32,  84.28)    1.78                 7
 09/22/2018   02:52:09   (  79.11,  31.15) 09/22/2018   02:51:27  (  79.10,  31.14)    0.34                42