Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 5 1.  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)
 05/03/2015   16:41:56   (  78.06, 178.37) 05/03/2015   16:40:53  (  78.05, 178.29)    1.99                63
 05/03/2015   17:31:12   ( -78.55, -11.56) 05/03/2015   17:31:26  ( -78.54, -11.68)    3.02                14
 05/06/2015   08:58:23   (  78.21, -65.06) 05/06/2015   08:57:45  (  78.20, -65.18)    2.74                38
 05/06/2015   09:47:35   ( -78.86, 105.99) 05/06/2015   09:48:13  ( -78.87, 106.11)    2.54                38
 05/09/2015   01:14:46   (  78.46,  52.04) 05/09/2015   01:14:33  (  78.45,  52.02)    0.49                13
 05/09/2015   02:04:04   ( -78.85,-138.18) 05/09/2015   02:05:08  ( -78.85,-138.24)    1.36                64
 05/11/2015   16:41:57   ( -78.14,  -1.27) 05/11/2015   16:40:52  ( -78.14,  -1.28)    0.13                65
 05/11/2015   17:31:12   (  78.59, 168.63) 05/11/2015   17:31:25  (  78.59, 168.56)    1.43                13
 05/14/2015   08:58:20   ( -78.39, 115.79) 05/14/2015   08:57:41  ( -78.39, 115.87)    1.85                39