Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2015 5 7.  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)
 05/09/2015   01:14:47   (  78.43,  51.94) 05/09/2015   01:14:34  (  78.43,  51.87)    1.72                13
 05/09/2015   02:04:05   ( -78.83,-138.32) 05/09/2015   02:05:09  ( -78.82,-138.43)    2.65                64
 05/11/2015   16:42:00   ( -78.04,  -1.76) 05/11/2015   16:40:55  ( -78.03,  -1.87)    2.93                65
 05/11/2015   17:31:10   (  78.71, 169.24) 05/11/2015   17:31:22  (  78.71, 169.33)    2.07                12
 05/14/2015   08:58:25   ( -78.21, 114.93) 05/14/2015   08:57:46  ( -78.20, 114.81)    3.00                39
 05/14/2015   09:47:36   (  78.83, -74.22) 05/14/2015   09:48:14  (  78.83, -74.13)    2.21                38
 05/17/2015   01:14:46   ( -78.48,-127.82) 05/17/2015   01:14:33  ( -78.48,-127.84)    0.45                13
 05/17/2015   02:04:02   (  78.88,  41.98) 05/17/2015   02:05:07  (  78.88,  41.92)    1.38                65
 05/19/2015   16:41:54   (  78.15, 178.78) 05/19/2015   16:40:51  (  78.15, 178.76)    0.56                63