Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 8 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)
 08/26/2015   08:57:16   (  78.49, -63.55) 08/26/2015   08:56:31  (  78.48, -63.66)    2.70                45
 08/26/2015   09:46:34   ( -78.88, 106.21) 08/26/2015   09:47:06  ( -78.87, 106.08)    2.96                32
 08/29/2015   01:13:39   (  78.61,  52.97) 08/29/2015   01:13:19  (  78.60,  52.84)    2.94                20
 08/29/2015   02:02:53   ( -79.15,-136.25) 08/29/2015   02:03:49  ( -79.16,-136.12)    2.92                56
 08/31/2015   16:40:45   ( -78.40,   0.14) 08/31/2015   16:39:32  ( -78.40,   0.11)    0.68                73
 08/31/2015   17:30:01   (  78.80, 169.90) 08/31/2015   17:30:06  (  78.79, 169.82)    2.05                 5
 09/03/2015   08:57:07   ( -78.59, 116.99) 09/03/2015   08:56:19  ( -78.59, 117.03)    1.10                48
 09/03/2015   09:46:23   (  78.98, -73.19) 09/03/2015   09:46:53  (  78.98, -73.19)    0.09                30
 09/06/2015   01:13:32   ( -78.63,-126.87) 09/06/2015   01:13:10  ( -78.63,-126.97)    2.20                22
 09/06/2015   02:02:48   (  79.02,  42.96) 09/06/2015   02:03:44  (  79.01,  42.83)    3.11                56
 09/08/2015   16:40:32   (  78.52,-179.23) 09/08/2015   16:39:18  (  78.53,-179.10)    2.99                74