Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 12 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)
 12/13/2015   17:29:46   ( -78.98,  -8.95) 12/13/2015   17:28:54  ( -78.97,  -9.06)    2.45                52
 12/13/2015   18:19:02   (  79.37, 161.15) 12/13/2015   18:19:27  (  79.36, 161.12)    0.62                25
 12/16/2015   09:46:12   ( -79.17, 108.12) 12/16/2015   09:45:42  ( -79.17, 108.14)    0.44                30
 12/16/2015   10:35:28   (  79.52, -81.97) 12/16/2015   10:36:15  (  79.52, -81.84)    2.71                47
 12/19/2015   02:02:40   ( -79.23,-135.63) 12/19/2015   02:02:33  ( -79.23,-135.66)    0.66                 7
 12/19/2015   02:51:57   (  79.57,  34.29) 12/19/2015   02:53:07  (  79.58,  34.38)    2.05                70
 12/21/2015   17:29:48   (  79.02, 171.31) 12/21/2015   17:28:47  (  79.02, 171.27)    1.02                61
 12/21/2015   18:19:06   ( -79.39, -18.73) 12/21/2015   18:19:22  ( -79.39, -18.70)    0.69                16
 12/24/2015   09:46:13   (  79.20, -71.69) 12/24/2015   09:45:35  (  79.21, -71.56)    2.86                38