Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 12 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)
 12/11/2015   01:13:35   ( -78.12,-129.36) 12/11/2015   01:12:21  ( -78.17,-129.63)    8.76                74
 12/11/2015   02:02:34   (  79.23,  44.40) 12/11/2015   02:02:37  (  79.23,  44.33)    1.53                 3
 12/13/2015   17:29:46   ( -78.97,  -8.97) 12/13/2015   17:28:54  ( -78.97,  -9.09)    2.63                52
 12/13/2015   18:19:02   (  79.36, 161.11) 12/13/2015   18:19:27  (  79.36, 161.08)    0.78                25
 12/16/2015   09:46:13   ( -79.13, 107.86) 12/16/2015   09:45:43  ( -79.13, 107.85)    0.27                30
 12/16/2015   10:35:29   (  79.51, -82.00) 12/16/2015   10:36:16  (  79.52, -81.89)    2.16                47
 12/19/2015   02:02:40   ( -79.23,-135.63) 12/19/2015   02:02:33  ( -79.22,-135.71)    1.80                 7
 12/19/2015   02:51:57   (  79.57,  34.27) 12/19/2015   02:53:07  (  79.57,  34.32)    0.86                70
 12/21/2015   17:29:50   (  78.94, 170.84) 12/21/2015   17:28:49  (  78.93, 170.70)    3.01                61