Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 5 14.  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)
 05/14/2015   08:58:21   ( -78.31, 115.44) 05/14/2015   08:57:43  ( -78.31, 115.43)    0.13                38
 05/14/2015   09:47:36   (  78.76, -74.56) 05/14/2015   09:48:16  (  78.76, -74.60)    1.06                40
 05/17/2015   01:14:43   ( -78.48,-127.86) 05/17/2015   01:14:33  ( -78.47,-127.90)    0.90                10
 05/17/2015   02:03:59   (  78.88,  41.96) 05/17/2015   02:05:07  (  78.87,  41.88)    1.62                68
 05/19/2015   16:41:48   (  78.18, 178.94) 05/19/2015   16:40:50  (  78.18, 178.91)    0.89                58
 05/19/2015   17:31:05   ( -78.63, -11.16) 05/19/2015   17:31:24  ( -78.62, -11.24)    1.75                19
 05/22/2015   08:58:09   (  78.33, -64.43) 05/22/2015   08:57:41  (  78.33, -64.51)    2.02                28
 05/22/2015   09:47:26   ( -78.78, 105.52) 05/22/2015   09:48:15  ( -78.77, 105.41)    2.65                49
 05/25/2015   00:26:07   ( -75.53,-126.62) 05/25/2015   00:24:53  ( -75.65,-127.25)   21.95                74
 05/25/2015   01:14:24   (  78.69,  53.30) 05/25/2015   01:14:26  (  78.70,  53.43)    3.00                 2
 05/27/2015   16:41:27   ( -78.38,  -0.02) 05/27/2015   16:40:43  ( -78.39,   0.08)    2.61                44