Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 8 20.  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)
 08/23/2014   06:30:08   ( -75.30, 141.66) 08/23/2014   06:29:46  ( -75.29, 141.60)    2.16                22
 08/23/2014   07:19:14   (  76.25, -47.89) 08/23/2014   07:20:10  (  76.24, -47.99)    2.71                56
 08/25/2014   21:57:22   (  74.57,  88.01) 08/25/2014   21:56:16  (  74.56,  87.96)    1.48                66
 08/25/2014   22:46:24   ( -75.87,-100.83) 08/25/2014   22:46:34  ( -75.87,-100.80)    0.58                10
 08/28/2014   14:13:34   (  75.29,-154.25) 08/28/2014   14:13:00  (  75.30,-154.18)    2.30                34
 08/28/2014   15:02:46   ( -76.08,  15.69) 08/28/2014   15:03:29  ( -76.07,  15.64)    1.30                43
 08/31/2014   05:44:16   ( -63.26, 136.52) 08/31/2014   05:43:03  ( -63.42, 135.38)   59.41                73
 08/31/2014   06:29:53   (  75.68, -37.25) 08/31/2014   06:29:52  (  75.69, -37.20)    1.55                 1
 08/31/2014   07:17:54   ( -79.54, 147.51) 08/31/2014   07:19:08  ( -79.35, 148.23)   25.59                74
 09/02/2014   21:57:16   ( -74.61, -91.88) 09/02/2014   21:56:31  ( -74.60, -91.96)    2.68                45