Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 1 1.  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)
 01/03/2015   14:16:20   (  66.81,-168.36) 01/03/2015   14:15:07  (  67.02,-169.71)   63.65                73
 01/03/2015   15:02:15   ( -77.90,  22.67) 01/03/2015   15:02:14  ( -77.90,  22.63)    0.94                 1
 01/03/2015   15:49:37   (  81.69,-131.45) 01/03/2015   15:50:50  (  81.31,-130.87)   43.54                73
 01/06/2015   06:29:19   (  77.56, -30.53) 01/06/2015   06:28:27  (  77.57, -30.49)    1.03                52
 01/06/2015   07:18:31   ( -78.24, 140.14) 01/06/2015   07:18:56  ( -78.24, 140.18)    1.08                25
 01/08/2015   22:45:34   (  77.90,  86.86) 01/08/2015   22:45:09  (  77.91,  86.94)    2.09                25
 01/08/2015   23:34:47   ( -78.52,-102.53) 01/08/2015   23:35:39  ( -78.52,-102.42)    2.61                52
 01/11/2015   14:12:41   ( -77.36,  32.82) 01/11/2015   14:11:27  ( -77.36,  32.83)    0.45                74
 01/11/2015   15:01:48   (  78.19,-155.88) 01/11/2015   15:01:51  (  78.20,-155.77)    2.66                 3
 01/14/2015   06:28:54   ( -77.70, 150.17) 01/14/2015   06:28:09  ( -77.71, 150.18)    0.34                45