Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 8 21.  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)
 08/23/2015   16:40:52   (  78.36, 179.90) 08/23/2015   16:39:42  (  78.35, 179.83)    1.86                70
 08/23/2015   17:30:09   ( -78.79, -10.15) 08/23/2015   17:30:16  ( -78.79, -10.23)    1.83                 7
 08/26/2015   08:57:13   (  78.62, -62.85) 08/26/2015   08:56:27  (  78.63, -62.76)    2.14                46
 08/26/2015   09:46:31   ( -79.01, 106.97) 08/26/2015   09:47:02  ( -79.02, 107.06)    2.00                31
 08/29/2015   01:13:37   (  78.70,  53.49) 08/29/2015   01:13:16  (  78.71,  53.52)    0.81                21
 08/29/2015   02:02:55   ( -79.09,-136.64) 08/29/2015   02:03:51  ( -79.09,-136.62)    0.44                56
 08/31/2015   16:40:44   ( -78.47,   0.48) 08/31/2015   16:39:30  ( -78.47,   0.55)    1.74                74
 08/31/2015   17:30:00   (  78.86, 170.25) 08/31/2015   17:30:04  (  78.86, 170.27)    0.32                 4
 09/03/2015   08:57:07   ( -78.62, 117.17) 09/03/2015   08:56:18  ( -78.63, 117.24)    1.80                49