Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 3 12.  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)
 03/13/2017   19:08:46   (  79.33, 148.56) 03/13/2017   19:07:37  (  79.33, 148.46)    2.17                69
 03/13/2017   19:58:05   ( -79.65, -41.62) 03/13/2017   19:58:13  ( -79.64, -41.63)    0.37                 8
 03/16/2017   11:25:13   (  79.44, -94.87) 03/16/2017   11:24:27  (  79.43, -94.95)    1.79                46
 03/16/2017   12:14:33   ( -79.71,  74.74) 03/16/2017   12:15:04  ( -79.71,  74.75)    0.32                31
 03/19/2017   03:41:40   (  79.53,  21.69) 03/19/2017   03:41:17  (  79.53,  21.65)    0.90                23
 03/19/2017   04:31:01   ( -79.77,-168.94) 03/19/2017   04:31:55  ( -79.78,-168.88)    1.46                54
 03/21/2017   19:11:28   ( -71.69, -56.05) 03/21/2017   19:10:15  ( -72.04, -58.23)   84.72                73
 03/21/2017   19:58:07   (  79.63, 138.22) 03/21/2017   19:58:07  (  79.63, 138.25)    0.50                 0
 03/21/2017   20:44:44   ( -80.98,  10.22) 03/21/2017   20:45:56  ( -80.15,   8.17)   99.40                72
 03/24/2017   11:25:15   ( -79.43,  85.08) 03/24/2017   11:24:21  ( -79.43,  85.07)    0.24                54