Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2014 6 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)
 06/22/2014   22:47:12   ( -73.87,-105.98) 06/22/2014   22:45:58  ( -73.94,-106.35)   13.64                74
 06/22/2014   23:35:41   (  76.70,  69.51) 06/22/2014   23:35:43  (  76.70,  69.51)    0.17                 2
 06/25/2014   15:02:59   ( -76.19,  16.04) 06/25/2014   15:02:07  ( -76.20,  16.12)    2.43                52
 06/25/2014   15:52:09   (  76.95,-173.75) 06/25/2014   15:52:34  (  76.96,-173.67)    2.17                25
 06/28/2014   07:19:36   ( -76.25, 132.04) 06/28/2014   07:19:04  ( -76.24, 132.04)    0.17                32
 06/28/2014   08:08:46   (  76.99, -57.74) 06/28/2014   08:09:31  (  76.99, -57.74)    0.15                45
 06/30/2014   23:36:17   ( -76.29,-112.01) 06/30/2014   23:36:01  ( -76.28,-112.04)    0.89                16
 07/01/2014   00:25:26   (  77.08,  58.39) 07/01/2014   00:26:27  (  77.07,  58.36)    0.93                61
 07/03/2014   15:53:00   ( -76.41,   4.21) 07/03/2014   15:52:56  ( -76.41,   4.20)    0.23                 4