Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 7 30.  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)
 07/30/2015   16:40:55   ( -78.44,   0.35) 07/30/2015   16:40:04  ( -78.44,   0.32)    0.81                51
 07/30/2015   17:30:10   (  78.90, 170.44) 07/30/2015   17:30:36  (  78.90, 170.45)    0.33                26
 08/02/2015   08:57:20   ( -78.65, 117.33) 08/02/2015   08:56:51  ( -78.66, 117.42)    2.28                29
 08/02/2015   09:46:39   (  78.93, -73.48) 08/02/2015   09:47:28  (  78.93, -73.58)    2.39                49
 08/05/2015   01:13:48   ( -78.73,-126.40) 08/05/2015   01:13:42  ( -78.73,-126.40)    0.19                 6
 08/05/2015   02:03:03   (  79.16,  43.77) 08/05/2015   02:04:14  (  79.17,  43.87)    2.24                71
 08/07/2015   16:40:58   (  78.35, 179.84) 08/07/2015   16:39:58  (  78.34, 179.74)    2.40                60
 08/07/2015   17:30:14   ( -78.83,  -9.95) 08/07/2015   17:30:31  ( -78.83,  -9.99)    0.92                17
 08/10/2015   08:57:24   (  78.49, -63.58) 08/10/2015   08:56:47  (  78.48, -63.68)    2.20                37
 08/10/2015   09:46:40   ( -78.97, 106.69) 08/10/2015   09:47:20  ( -78.96, 106.66)    0.98                40
 08/13/2015   01:13:48   (  78.70,  53.41) 08/13/2015   01:13:34  (  78.69,  53.37)    0.97                14