Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 9 19.  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)
 09/22/2015   01:13:31   ( -78.68,-126.62) 09/22/2015   01:12:48  ( -78.69,-126.54)    1.80                43
 09/22/2015   02:02:48   (  79.04,  43.08) 09/22/2015   02:03:23  (  79.04,  43.07)    0.19                35
 09/24/2015   17:29:55   ( -78.78, -10.18) 09/24/2015   17:29:36  ( -78.78, -10.15)    0.78                19
 09/24/2015   18:19:13   (  79.10, 159.30) 09/24/2015   18:20:12  (  79.09, 159.24)    1.17                59
 09/27/2015   08:57:01   (  78.52, -63.33) 09/27/2015   08:55:49  (  78.52, -63.27)    1.39                72
 09/27/2015   09:46:18   ( -78.95, 106.67) 09/27/2015   09:46:23  ( -78.95, 106.73)    1.40                 5
 09/30/2015   01:13:27   (  78.55,  52.72) 09/30/2015   01:12:40  (  78.54,  52.60)    2.88                47
 09/30/2015   02:02:45   ( -78.94,-137.49) 09/30/2015   02:03:15  ( -78.93,-137.61)    2.61                30
 10/02/2015   17:29:48   (  78.78, 169.84) 10/02/2015   17:29:25  (  78.78, 169.87)    0.74                23