Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2018 3 7.  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)
 03/08/2018   19:58:33   (  79.67, 138.64) 03/08/2018   19:57:59  (  79.66, 138.59)    0.98                34
 03/08/2018   20:47:54   ( -79.89, -51.97) 03/08/2018   20:48:37  ( -79.89, -51.99)    0.54                43
 03/11/2018   12:14:59   (  79.74,-104.88) 03/11/2018   12:14:52  (  79.74,-104.95)    1.41                 7
 03/11/2018   13:04:21   ( -79.94,  64.26) 03/11/2018   13:05:31  ( -79.94,  64.22)    0.75                70
 03/14/2018   03:42:06   ( -79.61,-157.61) 03/14/2018   03:41:08  ( -79.61,-157.62)    0.20                58
 03/14/2018   04:31:26   (  79.82,  11.58) 03/14/2018   04:31:46  (  79.82,  11.51)    1.44                20
 03/16/2018   19:58:32   ( -79.72, -40.92) 03/16/2018   19:58:01  ( -79.72, -40.89)    0.54                31
 03/16/2018   20:47:53   (  79.89, 128.01) 03/16/2018   20:48:40  (  79.89, 127.96)    1.08                47
 03/19/2018   12:14:58   ( -79.83,  75.76) 03/19/2018   12:14:54  ( -79.83,  75.84)    1.61                 4