Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 8 27.  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)
 08/29/2015   01:13:39   (  78.62,  53.06) 08/29/2015   01:13:19  (  78.62,  52.95)    2.72                20
 08/29/2015   02:02:57   ( -79.01,-137.12) 08/29/2015   02:03:54  ( -79.00,-137.26)    3.11                57
 08/31/2015   16:40:45   ( -78.42,   0.22) 08/31/2015   16:39:32  ( -78.41,   0.22)    0.13                73
 08/31/2015   17:30:01   (  78.82, 170.00) 08/31/2015   17:30:06  (  78.81, 169.94)    1.36                 5
 09/03/2015   08:57:05   ( -78.64, 117.29) 09/03/2015   08:56:17  ( -78.65, 117.40)    2.47                48
 09/03/2015   09:46:22   (  78.99, -73.09) 09/03/2015   09:46:52  (  79.00, -73.03)    1.40                30
 09/06/2015   01:13:29   ( -78.73,-126.34) 09/06/2015   01:13:07  ( -78.73,-126.34)    0.20                22
 09/06/2015   02:02:46   (  79.08,  43.29) 09/06/2015   02:03:42  (  79.07,  43.26)    0.81                56
 09/08/2015   16:40:34   (  78.45,-179.59) 09/08/2015   16:39:21  (  78.45,-179.58)    0.25                73