Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 7 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)
 07/22/2015   16:40:49   (  78.60,-178.83) 07/22/2015   16:40:06  (  78.61,-178.70)    3.08                43
 07/22/2015   17:30:08   ( -78.94,  -9.31) 07/22/2015   17:30:43  ( -78.94,  -9.29)    0.37                35
 07/25/2015   08:57:14   (  78.58, -63.06) 07/25/2015   08:56:59  (  78.57, -63.18)    2.86                15
 07/25/2015   09:46:30   ( -79.04, 107.19) 07/25/2015   09:47:32  ( -79.04, 107.21)    0.55                62
 07/28/2015   00:24:21   ( -78.26,-116.39) 07/28/2015   00:23:16  ( -78.25,-116.51)    3.06                65
 07/28/2015   01:13:35   (  78.76,  53.80) 07/28/2015   01:13:47  (  78.75,  53.73)    1.69                12
 07/30/2015   16:40:41   ( -78.48,   0.60) 07/30/2015   16:40:03  ( -78.48,   0.54)    1.40                38
 07/30/2015   17:29:55   (  78.96, 170.88) 07/30/2015   17:30:34  (  78.96, 170.90)    0.37                39
 08/02/2015   08:57:00   ( -78.73, 117.82) 08/02/2015   08:56:49  ( -78.74, 117.87)    1.16                11