Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 12 25.  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)
 12/27/2015   02:02:38   (  79.31,  44.87) 12/27/2015   02:02:25  (  79.31,  44.97)    2.34                13
 12/27/2015   02:52:00   ( -79.50,-146.17) 12/27/2015   02:53:05  ( -79.49,-146.29)    2.44                65
 12/29/2015   17:29:48   ( -78.96,  -9.04) 12/29/2015   17:28:43  ( -78.95,  -9.16)    2.80                65
 12/29/2015   18:19:03   (  79.39, 161.29) 12/29/2015   18:19:15  (  79.39, 161.32)    0.84                12
 01/01/2016   09:46:12   ( -79.10, 107.72) 01/01/2016   09:45:32  ( -79.10, 107.63)    2.14                40
 01/01/2016   10:35:27   (  79.52, -81.90) 01/01/2016   10:36:04  (  79.52, -81.80)    1.96                37
 01/04/2016   02:02:34   ( -79.30,-135.12) 01/04/2016   02:02:19  ( -79.31,-135.06)    1.16                15
 01/04/2016   02:51:53   (  79.56,  34.27) 01/04/2016   02:52:56  (  79.56,  34.24)    0.73                63
 01/06/2016   17:29:39   (  79.08, 171.71) 01/06/2016   17:28:33  (  79.08, 171.73)    0.38                66